Review for WP and Inequality Quiz

5 less than a number is 15.

• x - 5 = 15
• 5 - x = 15
• 15 - x = 5

Two more than 4 times a number is -18.

• 4x + 2 = -18

• 2x + 4 = -18

• 18 = 4x +2

Five less than twice a number is to thirty.

• 5x - 2 = 30

• x - 5 = 30

• 2x - 5 = 30

• 5 - 2x = 30

Sixteen more than five times a number is fifty six.

• 5x + 56 = 16

• 16x + 5 = 56

• 5x + 16 = 56

• 5x - 16 = 56

Scott works on cars. He charges $35 for each car plus $7 per hour. Write an equation that represents this scenario if Kylie's car bill was $63.

• 7x + 35 = 63
• 7x = 63
• 7x - 35 = 63
• 35x + 7 = 63

Laura is going to the carnival to ride the rides. It costs $20 to get into the carnival and ride tickets are $0.50 each. Write an equation that represents this scenario is she spends $35 in all.

• .50 + 20x = 35

• .50x + 20 = 35

• .50x -20 = 35

• 35 + .50x = 20

The Frederick County Fair costs $15.00 to get in and $2.50 per ride, while the Montgomery County Fair costs $10.00 to get in and $3.00 per ride. Which equations could be used to determine how many rides you would need to go on for both fairs to be of equal value?

• 15x + 2.5 = 10x + 3

• 15 - 2.5x = 10 - 3x

• 15 + 2.5x = 10 + 3x

• 15 - 10 = 2.5x + 3x

A rental car agency charges $30.00 per day plus per mile $0.15. Another rental car agency charges $36.00 per day plus $0.10 per mile. How many miles would have to be driven in one day for both rental agencies to cost the same amount to rent? 

• 120 miles
• 100 miles
• 110 miles
• 150 miles 

-2x + 7 < 19

• x < 6
• x < -6
• x > 6
• x > -6

• -2

• 2

• 0

• -3

• 10