Unit 3 Test Review

Ryan and Luis went back to school shopping. Ryan spent $22.50 on school supplies and bought 2 new t-shirts. Luis bought 5 new t-shirts and no school supplies. Both the boys spent the same amount of money. All t-shirts cost the same amount of money. Write an equation to model this situation.

• 22.5x+2x=5x

• 22.5+2x=5x

• 22.5x> 2x-5

• 5=22+2x

Ryan and Luis went back to school shopping. Ryan spent $22.50 on school supplies and bought 2 new t-shirts. Luis bought 5 new t-shirts and no school supplies. Both the boys spent the same amount of money. All t-shirts cost the same amount of money. Solve the equation that models this situation.

• 200

• 4

• 9

• 7.5

Paisley bought 8 used CD's with a $5 off coupon. She spent the same amount of money as she would've buying 6 CD's without the coupon. Write an equation or inequality to model this situation.

• 8x-5=6x

• 8x-5>6x

• 8x<-5+6x

• 6x+8x>5

Paisley bought 8 used CD's with a $5 off coupon. She spent the same amount of money as she would've buying 6 CD's without the coupon. Solve an equation or inequality that model's this situation.

• 5.5

• 4

• 2.5

• 3

Emery has 2 options for guitar lessons. Option A: $30 an hour. Option B: a one time fee of $100 plus $20 per hour. How many lessons must Emery take for option B to be less expensive than option A? Write an equation or inequality to represent this situation.

• 20x+100<30x

• 30x=20x+100

• 20+100x>30x

• 30x=100x+20x

Jacquilyn is in a hot air ballon that is 68 feet off the ground and rising at a rate of 6 feet a second. Miss Miller is in another hot air ballon that is 54 feet off the ground and rising at a rate of 8 feet per second. At how many seconds will the girls be at the same height off the ground? Write an equation or inequality to represent this situation.

• 6x-68=8x+54

• 6x+68>8x+54

• 6x+68=8x+54

• 68x+6<8+54x

Jacquilyn is in a hot air ballon that is 68 feet off the ground and rising at a rate of 6 feet a second. Miss Miller is in another hot air ballon that is 54 feet off the ground and rising at a rate of 8 feet per second. At how many seconds will the girls be at the same height off the ground? Solve an equation or inequality to represent this situation.

• 7 seconds

• 77 seconds

• 13 seconds

• 8 seconds

Noey's uncle is 2 years older than 4 times his dog's age. He is also as old as the sum of his aunts cat's age. If Noey's brother is 20 years old, the equation 2x+1=x+7(2) can be used to solve Noey's age, how old is Noey?

• 13.5

• 13

• 15

• 12

Solve the equation x+0.7=1-0.2x

• 0.25

• 0.33

• 0.29

• 0.28

Solve 4x=3(x+4)

• 13

• 12

• 8

• 16