Chapter 1

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . The sum of 10 and \(x\) is \(-12\)

Add or subtract as indicated. See Examples I through 3 $$ -3+8 $$

Find the value of each algebraic expression at the given replacement values. See Examples 1 and 2 \(5 x\) when \(x=7\)

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . The difference of \(y\) and 3 amounts to 12

Use a graphing calculator to check each exercise. $$ 12+(-7) $$

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . Twice \(x,\) plus \(5,\) is the same as \(-14\).

Use a graphing calculator to check each exercise. $$ -14+(-10) $$

Find the value of each algebraic expression at the given replacement values. See Examples 1 and 2 $$ 9.8 z \text { when } z=3.1 $$

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . Three more than the product of 4 and \(c\) is 7 .

Use a graphing calculator to check each exercise. $$ -5+(-9) $$

Find the value of each algebraic expression at the given replacement values. See Examples 1 and 2 \(7.1 a\) when \(a=1.5\)

Do you have the name and contact information of at least one other student in class?

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . The quotient of \(n\) and 5 is 4 times \(n\)

Use a graphing calculator to check each exercise. $$ -4.3-6.7 $$

Find the value of each algebraic expression at the given replacement values. See Examples 1 and 2 $$ a b \text { when } a=\frac{1}{2} \text { and } b=\frac{3}{4} $$

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . The quotient of 8 and \(y\) is 3 more than \(y .\)

Use a graphing calculator to check each exercise. $$ -8.2-(-6.6) $$

Why is it important that you write step-by-step solutions to homework exercises and keep a hard copy of all work submitted?

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . The difference of \(z\) and one-half is the same as the product of \(z\) and one- half.

Use a graphing calculator to check each exercise. $$ 13-17 $$

Find the value of each algebraic expression at the given replacement values. See Examples 1 and 2 \(3 x+y\) when \(x=6\) and \(y=4\)

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . Five added to one-fourth \(q\) is the same as 4 more than \(q\).

Find the value of each algebraic expression at the given replacement values. See Examples 1 and 2 \(2 a-b\) when \(a=12\) and \(b=7\)

Have you attempted this course before? If so, write down ways that you might improve your chances of success during this second attempt.

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . The product of 7 and \(x\) is less than or equal to \(-21\).

Use a graphing calculator to check each exercise. $$ \frac{11}{15}-\left(-\frac{3}{5}\right) $$

The B737-400 aircraft flies an average speed of 400 miles per hour. The expression 400 t gives the distance traveled by the aircraft in \(t\) hours Find the distance traveled by the \(\mathrm{B} 737-400\) in 5 hours.

List some steps that you can take if you begin having trouble understanding the material or completing an assignment. If you are completing your homework in MyMathLab and MathXL', list the resources you can use for help.

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . 10 subtracted from the reciprocal of \(x\) is greater than \(0 .\)

Use a graphing calculator to check each exercise. $$ \frac{7}{10}-\frac{4}{5} $$

The algebraic expression \(1.5 x\) gives the total length of shelf space needed in inches for \(x\) encyclopedias. Find the length of shelf space needed for a set of 30 encyclopedias.

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . Twice the difference of \(x\) and 6 is greater than the reciprocal of 11.

Use a graphing calculator to check each exercise. $$ 19-10-11 $$

Employees at Walmart constantly reorganize and reshelve merchandise. In doing so, they calculate floor space needed for displays The algebraic expression \(l \cdot w\) gives the floor space needed in square units for a display that measures length \(l\) units and width \(w\) units. Calculate the floor space needed for a display whose length is 5.1 feet and whose width is 4 feet.

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . Four times the sum of 5 and \(x\) is not equal to the opposite of 15.

Use a graphing calculator to check each exercise. $$ -13-4+9 $$

The algebraic expression \(\frac{x}{5}\) can be used to calculate the distance in miles that you are from a flash of lightning, where \(x\) is the number of seconds between the time you see a flash of lightning and the time you hear the thunder. Calculate the distance that you are from the flash of lightning if you hear the thunder 2 seconds after you see the lightning.

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . Twice the difference of \(x\) and 6 is \(-27\).

Use a graphing calculator to check each exercise. $$ -\frac{4}{5}-\left(-\frac{3}{10}\right) $$

The B737-400 aircraft costs \(\$ 2948\) dollars per hour to operate. The algebraic expression \(2948 t\) gives the total cost to operate the aircraft for \(t\) hours. Find the total cost to operate the \(\mathrm{B} 737-400\) for 3.6 hours.

Write each sentence using mathematical symbols. See Examples I through 4 and 6 through 8 . 5 times the sum of 6 and \(y\) is \(-35\).

Use a graphing calculator to check each exercise. $$ -\frac{5}{2}-\left(-\frac{2}{3}\right) $$

Flying the SR-71A jet, Capt. Elden W. Joersz USAF, set a record speed of 2193.16 miles per hour. At this speed. the algebraic expression \(2193.16 t\) gives the total distance flown in \(t\) hours Find the distance flown by the SR-71A in 1.7 hours.

What are Practice exercises?

Insert \(<,>,\) or \(=\) between each pair of numbers to form a true statement. See Example \(5 .\) $$ -16-17 $$

Use a graphing calculator to check each exercise. Subtract 14 from \(8 .\)

Write each set in roster form. (List the elements of each set.) \(\\{x | x \text { is a natural number less than } 6\\}\)

Insert \(<,>,\) or \(=\) between each pair of numbers to form a true statement. See Example \(5 .\) $$ -14-24 $$

Use a graphing calculator to check each exercise. Subtract 9 from \(-3\)

Write each set in roster form. (List the elements of each set.) \(\\{x | x \text { is a natural number greater than } 6\\}\)