Chapter 2
Introductory Algebra for College Students · 565 exercises
Problem 26
Use the addition property of inequality to solve each inequality and graph the solution set on a number line. \(y+3 \geq 0\)
2 step solution
Problem 26
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(A x+B y=C\) for \(y\)
2 step solution
Problem 26
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$2 x-12 x=50$$
4 step solution
Problem 26
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$7(3 x-2)+5=6(2 x-1)+24$$
4 step solution
Problem 27
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$x-\frac{3}{4}=\frac{9}{2}$$
3 step solution
Problem 27
Solve the formula for the volume of a circular cylinder for \(h\)
3 step solution
Problem 27
Use the addition property of inequality to solve each inequality and graph the solution set on a number line. \(3 x+4 \leq 2 x+7\)
2 step solution
Problem 27
Use the percent formula, \(A=P B: A\) is \(P\) percent of \(B,\) to solve. What is \(3 \%\) of \(200 ?\)
3 step solution
Problem 27
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$8 x-3 x=-45$$
3 step solution
Problem 27
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$6=-4(1-x)+3(x+1)$$
4 step solution
Problem 28
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$x-\frac{3}{5}=\frac{7}{10}$$
4 step solution
Problem 28
Solve the formula for the volume of a circular cylinder for \(h\)
3 step solution
Problem 28
Use the addition property of inequality to solve each inequality and graph the solution set on a number line. \(2 x+9 \leq x+2\)
3 step solution
Problem 28
Use the percent formula, \(A=P B: A\) is \(P\) percent of \(B,\) to solve. What is \(8 \%\) of \(300 ?\)
3 step solution
Problem 28
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$8 x-3 x=-45$$
3 step solution
Problem 28
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$100=-(x-1)+4(x-6)$$
5 step solution
Problem 29
A car rental agency charges 200 dollars per week plus 0.15 dollars per mile to rent a car. How many miles can you travel in one week for 320 dollars ?
3 step solution
Problem 29
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$-\frac{1}{5}+y=-\frac{3}{4}$$
4 step solution
Problem 29
Solve the formula for the volume of a circular cylinder for \(h\)
2 step solution
Problem 29
Use the addition property of inequality to solve each inequality and graph the solution set on a number line. \(5 x-9<4 x+7\)
2 step solution
Problem 29
Solve each equation in using both the addition and multiplication properties of equality. Check proposed solutions. $$2 x+1=11$$
3 step solution
Problem 29
Use the percent formula, \(A=P B: A\) is \(P\) percent of \(B,\) to solve. What is \(18 \%\) of \(40 ?\)
3 step solution
Problem 29
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$10(z+4)-4(z-2)=3(z-1)+2(z-3)$$
4 step solution
Problem 30
A car rental agency charges 180 dollars per week plus 0.25 dollars per mile to rent a car. How many miles can you travel in one week for 395 dollars ?
3 step solution
Problem 30
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$-\frac{1}{8}+y=-\frac{1}{4}$$
3 step solution
Problem 30
Solve the formula for the volume of a circular cylinder for \(h\)
2 step solution
Problem 30
Use the addition property of inequality to solve each inequality and graph the solution set on a number line. \(3 x-8<2 x+11\)
3 step solution
Problem 30
Solve each equation in using both the addition and multiplication properties of equality. Check proposed solutions. $$2 x+5=13$$
5 step solution
Problem 30
Use the percent formula, \(A=P B: A\) is \(P\) percent of \(B,\) to solve. What is \(16 \%\) of \(90 ?\)
3 step solution
Problem 30
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$-2(z-4)-(3 z-2)=-2-(6 z-2)$$
4 step solution
Problem 31
The bar graph shows that average rent and mortgage payments in the United States have increased since \(1975,\) even after taking inflation into account. Exercises \(31-32\) are based on the information displayed by the graph. (GRAPH CANNOT COPY) In \(2008,\) mortgage payments averaged 1514 dollars per month. For the period shown, monthly mortgage payments increased by approximately 20 dollars per year. If this trend continues, how many years after 2008 will mortgage payments average 1714 dollars ? In which year will this occur?
4 step solution
Problem 31
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$3.2+x=7.5$$
3 step solution
Problem 31
Use the relationship among the three angles of any triangle to solve. Two angles of a triangle have the same measure and the third angle is \(30^{\circ}\) greater than the measure of the other two. Find the measure of each angle. (image cannot copy)
3 step solution
Problem 31
Use the addition property of inequality to solve each inequality and graph the solution set on a number line. \(7 x-7>6 x-3\)
2 step solution
Problem 31
Solve each equation in using both the addition and multiplication properties of equality. Check proposed solutions. $$2 x-3=9$$
3 step solution
Problem 31
Use the percent formula, \(A=P B: A\) is \(P\) percent of \(B,\) to solve. 3 is \(60 \%\) of what?
4 step solution
Problem 31
Solve each equation and check your proposed solution in Exercises. Begin your work by rewriting each equation without fractions. $$\frac{x}{5}-4=-6$$
3 step solution
Problem 32
The bar graph shows that average rent and mortgage payments in the United States have increased since \(1975,\) even after taking inflation into account. Exercises \(31-32\) are based on the information displayed by the graph. (GRAPH CANNOT COPY) In \(2008,\) rent payments averaged 824 dollars per month. For the period shown, monthly rent payments increased by approximately 7 dollars per year. If this trend continues, how many years after 2008 will rent payments average 929 dollars? In which year will this occur?
4 step solution
Problem 32
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$-2.7+w=-5.3$$
4 step solution
Problem 32
Use the relationship among the three angles of any triangle to solve. (image cannot copy) One angle of a triangle is three times as large as another. The measure of the third angle is \(40^{\circ}\) more than that of the smallest angle. Find the measure of each angle.
5 step solution
Problem 32
Use the addition property of inequality to solve each inequality and graph the solution set on a number line. \(8 x-9>7 x-3\)
3 step solution
Problem 32
Solve each equation in using both the addition and multiplication properties of equality. Check proposed solutions. $$3 x-2=9$$
3 step solution
Problem 32
Use the percent formula, \(A=P B: A\) is \(P\) percent of \(B,\) to solve. 8 is \(40 \%\) of what?
4 step solution
Problem 32
Solve each equation and check your proposed solution in Exercises. Begin your work by rewriting each equation without fractions. $$\frac{x}{2}+13=-22$$
4 step solution
Problem 33
A rectangular field is four times as long as it is wide. If the perimeter of the field is 500 yards, what are the field's dimensions?
4 step solution
Problem 33
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$x+\frac{3}{4}=-\frac{9}{2}$$
5 step solution
Problem 33
Use the addition property of inequality to solve each inequality and graph the solution set on a number line. \(x-\frac{2}{3}>\frac{1}{2}\)
3 step solution
Problem 33
Solve each equation in using both the addition and multiplication properties of equality. Check proposed solutions. $$-2 y+5=7$$
3 step solution
Problem 33
Use the percent formula, \(A=P B: A\) is \(P\) percent of \(B,\) to solve. \(24 \%\) of what number is \(40.8 ?\)
3 step solution
Problem 33
Solve each equation and check your proposed solution in Exercises. Begin your work by rewriting each equation without fractions. $$\frac{2 x}{3}-5=7$$
4 step solution