7th Grade Math Review

The class has 12 girls and 16 boys. What is the ratio of total students to boys? (simplest form)

Simplfy.
 $\left(2\right)\left(18\right)\div\left(-2+5\right)\left(-1\right)$  

A football team loses 5 yards on each of 3 consecutive plays. What signed number represents the team's total loss of yards on the 3 plays?

During one week, Sheila made several changes to her bank account. She made four withdrawals of $40 each from an ATM. She also used her check card for a $156 purchase. Then she deposited her paycheck of $375.

By how much did the amount in her bank account change during that week?

Consider the expression 6r - r + 8(15 - r) + 23 - 6.

Is -3r + 137 equivalent to the given expression?

An inequality is shown: 2x - 2 < 4.

What values of x make the inequality true?

Which expression is equivalent to -7(y - 2)

A furniture store sells kits that customers use to build cabinets. Each kit contains 18 screws and a set number of boards. Jarred buys 6 of these kits and has a total of 192 screws and boards.

This equation represents the situation:

6(x + 18) = 192

What does the variable x represent in Jarred's equation?

Julie works Sunday, Monday, and Wednesday for 10 hours each day. On Tuesday, Thursday, and Friday, she works 7 hours each day. She does not work on Saturday. Her weekly total earnings are $612.

What is Julie's hourly rate of pay in dollars?