Chapter 2
Algebra for College Students · 462 exercises
Problem 23
Solve each equation. \(5 x+3-2 x=x-15\)
4 step solution
Problem 24
Solve each equation and inequality. \(|3 x+1| \leq 13\)
5 step solution
Problem 24
Graph the solution set for each compound inequality, and express the solution sets in interval notation. \(x>1 \quad\) or \(\quad x<-4\)
4 step solution
Problem 24
Solve each of the following for the indicated variable. \(A=\frac{1}{2} h\left(b_{1}+b_{2}\right) \quad\) for \(h \quad\) (Area of a trapezoid)
3 step solution
Problem 24
Solve each equation. \(0.09 x=1650-0.12(x+5000)\)
3 step solution
Problem 24
Solve each equation. \(\frac{2 x-1}{2}-\frac{3 x+1}{4}=\frac{3}{10}\)
4 step solution
Problem 24
Solve each equation. \(4 x-2-x=5 x+10\)
4 step solution
Problem 25
Solve each equation and inequality. \(|4 x+2| \geq 12\)
4 step solution
Problem 25
Graph the solution set for each compound inequality, and express the solution sets in interval notation. \(x \leq 1 \quad\) or \(\quad x>3\)
5 step solution
Problem 25
Express each interval as an inequalit using the variable \(x\). For example, we can express the inter val \([5, \infty)\) as \(x \geq 5\). \(3 x-2>-5\)
3 step solution
Problem 25
Solve each of the following for the indicated variable. \(\mathrm{F}=\frac{9}{5} C+32\) for \(\mathrm{C} \quad\) (Celsius to Fahrenheit)
3 step solution
Problem 25
Solve each equation. \(0.3(2 t+0.1)=8.43\)
3 step solution
Problem 25
Solve each equation. \(\frac{2 x-1}{8}-1=\frac{x+5}{7}\)
4 step solution
Problem 25
Solve each equation. \(6 y+18+y=2 y+3\)
4 step solution
Problem 26
Solve each equation and inequality. \(|5 x-2| \geq 10\)
4 step solution
Problem 26
Graph the solution set for each compound inequality, and express the solution sets in interval notation. \(x<-2 \quad\) or \(\quad x \geq 1\)
4 step solution
Problem 26
Express each interval as an inequalit using the variable \(x\). For example, we can express the inter val \([5, \infty)\) as \(x \geq 5\). \(5 x-3<-3\)
2 step solution
Problem 26
Solve each of the following for the indicated variable. $$ \mathrm{C}=\frac{5}{9}(F-32) \text { for } \mathrm{F} $$ (Fahrenheit to Celsius)
5 step solution
Problem 26
Solve each equation. \(0.5(3 t+0.7)=20.6\)
3 step solution
Problem 26
Solve each equation. \(\frac{3 x+1}{9}+2=\frac{x-1}{4}\)
5 step solution
Problem 26
Solve each equation. \(5 y+14+y=3 y-7\)
4 step solution
Problem 27
Solve each equation and inequality. \(|3 x+4|=11\)
5 step solution
Problem 27
Graph the solution set for each compound inequality, and express the solution sets in interval notation. \(x>0\) and \(x>-1\)
4 step solution
Problem 27
Express each interval as an inequalit using the variable \(x\). For example, we can express the inter val \([5, \infty)\) as \(x \geq 5\). \(-7 x-3 \leq 4\)
4 step solution
Problem 27
Solve each equation. \(0.1(x-0.1)-0.4(x+2)=-5.31\)
4 step solution
Problem 27
Solve each equation. \(\frac{2 a-3}{6}+\frac{3 a-2}{4}+\frac{5 a+6}{12}=4\)
5 step solution
Problem 27
Solve each equation. \(4 x-3+2 x=8 x-3-x\)
4 step solution
Problem 28
Solve each equation and inequality. \(|5 x-7|=14\)
4 step solution
Problem 28
Graph the solution set for each compound inequality, and express the solution sets in interval notation. \(x>-2\) and \(x>2\)
4 step solution
Problem 28
Solve each equation. \(0.2(x+0.2)+0.5(x-0.4)=5.44\)
4 step solution
Problem 28
Solve each equation. \(\frac{3 a-1}{4}+\frac{a-2}{3}-\frac{a-1}{5}=\frac{21}{20}\)
6 step solution
Problem 28
Solve each equation. \(x-4-4 x=6 x+9-8 x\)
4 step solution
Problem 29
Solve each equation and inequality. \(|4-2 x|=6\)
4 step solution
Problem 29
Graph the solution set for each compound inequality, and express the solution sets in interval notation. \(x<0 \quad\) and \(\quad x>4\)
4 step solution
Problem 29
Express each interval as an inequalit using the variable \(x\). For example, we can express the inter val \([5, \infty)\) as \(x \geq 5\). \(2+6 x>-10\)
3 step solution
Problem 29
Solve each equation. Judy bought a coat at a \(20 \%\) discount sale for \(\$ 72\). What was the original price of the coat?
4 step solution
Problem 29
Solve each equation. \(x+\frac{3 x-1}{9}-4=\frac{3 x+1}{3}\)
5 step solution
Problem 29
Solve each equation. \(6 n-4-3 n=3 n+10+4 n\)
3 step solution
Problem 30
Solve each equation and inequality. \(|3-4 x|=8\)
4 step solution
Problem 30
Graph the solution set for each compound inequality, and express the solution sets in interval notation. \(x>1\) or \(x<2\)
4 step solution
Problem 30
Express each interval as an inequalit using the variable \(x\). For example, we can express the inter val \([5, \infty)\) as \(x \geq 5\). \(1+6 x>-17\)
6 step solution
Problem 30
Solve each equation for \(x\). \(a(x+b)=c\)
3 step solution
Problem 30
Solve each equation. Jim bought a pair of slacks at a \(25 \%\) discount sale for \(\$ 24\). What was the original price of the slacks?
4 step solution
Problem 30
Solve each equation. \(\frac{2 x+7}{8}+x-2=\frac{x-1}{2}\)
5 step solution
Problem 30
Solve each equation. \(2 n-1-3 n=5 n-7-3 n\)
4 step solution
Problem 31
Solve each equation and inequality. \(|2-x|>4\)
4 step solution
Problem 31
Graph the solution set for each compound inequality, and express the solution sets in interval notation. \(x>-2\) or \(x<3\)
5 step solution
Problem 31
Express each interval as an inequalit using the variable \(x\). For example, we can express the inter val \([5, \infty)\) as \(x \geq 5\). \(5-3 x<11\)
3 step solution
Problem 31
Solve each equation for \(x\). \(a(x+b)=b(x-c)\)
4 step solution
Problem 31
Solve each equation. Find the discount sale price of a \(\$ 64\) item that is on sale for \(15 \%\) off.
4 step solution