IM Unit 6 review

Which of these expressions is equivalent to 4m + 8m?

12m

f = 3g - 2 If g = 7, what is f?

19

. Evaluate the following expression when x = 2. x^3 + 7x + 2

24

Distribute 21x - 15

3(7x-5)

Which expression represents the product of x and 34?

34x

Marco needs $57 to buy new basketball shoes. If Marco earns $3 per day working and already has $12 saved, which equation shows how many days Marco must work before he can afford the shoes?

3d = 45

2. Mario is planning a charity dinner. Each table costs $50 and each chair costs $7 to rent. The other costs of the dinner are $475. Let t represent the number of tables and let c represent the number of chairs. Which of the following expressions represents the total cost of the dinner?

50t + 7c + 475

c × 12 = 672.96

56.08

Distribute. 5(x - 3)

5x-15

Evaluate the expression xy - 3x when x = 4 and y = 5.

8

x - 8 = 17

Add 8 to both sides leaving you with x = 25

4x = 12

Divide 4 on both sides leaving you with x = 3

x/12 = 36

Multiply 12 on both sides leaving you with x = 432

x + 7 = 12

Subtract 7 from both sides leaving you with x = 5

Green Leaf Lawn Care had 64 customers under contract at the start of the year. The company's owner expects his new radio advertisements will attract 2 new customers every week. If the radio commercials produce new customers exactly as the owner expects, which of these equations represents the number of customers (c) Green Leaf Lawn Care will have after w weeks?

c = 64 + 2w

34 - x = 15

x = 19

18 = 6x

x = 3

8x = 64

x = 8

x - 6 = 78

x = 84

6x - 13 = 41

x = 9