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Unit 2 Review - 8.8ABC

Total questions: 10

Worksheet time: 30mins

Name
Class
Date
1.

The equation 7 + 0.3x = 0.25x represents the fees charged by two companies. Which scenario best represents the equation?

a)

Company A charges a one time fee of $0.30 and $7 per piece of candy. Company B charges $0.25 per piece of candy.

b)

Company A charges a one time fee of $7 and $0.25 per piece of candy. Company B charges $0.30 per piece of candy.

c)

Company A charges a one time fee of $7 and $0.30 per piece of candy. Company B charges $0.25 per piece of candy.

d)

Company A charges a one time fee of $7.30 per piece of candy. Company B charges $0.25 per piece of candy.

2.

Target charges $90 to design a room and $10 per hour they are at your house. Walmart charges $80 to design a room and $25 per hour they are at your house. Which equation could be used to find the number of hours for which the cost of both stores is the same?

a)

115h = 90h

b)

h(90 + 10) = h(80 + 25)

c)

90h + 10 = 80h + 25

d)

90 + 10h = 80 + 25h

3.

Bob has $50 and spends $2.50 every day. Henry has $5 and saves $2.50 every day. Which equation could be used to determine when they have the same amount of money?

a)

50 - 2.50x = 5 - 2.50x

b)

50 - 2.50x = 5 + 2.50x

c)

50x - 2.50 = 5x + 2.50

d)

(50 - 2.50)x = (5 + 2.50)x

4.

The inequality shown represents two fees for different cleaning services. Which situation does this inequality represent?

100x + 55 < 140x + 25

a)

Clean House charge a $100 start-up fee and $55 per hour. Get'erDone charges a $140 start-up fee and $25 per hour. After how many hours will Get'erDone cost less than Clean House?

b)

Clean House charge a $55 start-up fee and $100 per hour. Get'erDone charges a $25 start-up fee and $140 per hour. After how many hours will Get'erDone cost less than Clean House?

c)

Clean House charge a $55 start-up fee and $100 per hour. Get'erDone charges a $25 start-up fee and $140 per hour. After how many hours will Get'erDone cost more than Clean House?

d)

Clean House charge a $100 start-up fee and $55 per hour. Get'erDone charges a $140 start-up fee and $25 per hour. After how many hours will Get'erDone cost more than Clean House?

5.

Which equation is represented by the model?

a)

-3x - 2 = -5x - 3

b)

-3 - 2x = -5 + 3x

c)

-3x - (-2) = -5x + 3

d)

-3x - 2 = -5x + 3

6.

Solve the equation pictured

a)

2

b)

2.5

c)

-2.5

d)

-9.5

7.

Solve the equation: m + 5 = -2m - 7

a)

-0.4

b)

4

c)

-4

d)

-04

8.

 x2+15 = x48\frac{x}{2}+15\ =\ -\frac{x}{4}-8  

a)

30.6

b)

-30.6

c)

-0.3

d)

0.3

9.

-4/5x + 2 = -5x - 9

a)

-4

b)

4

c)

2.6

d)

-2.6

10.

A candle was 20 cm tall and is melting at a rate of x cm per hour. A second candle was 30 cm tall and is melting 3 times faster than the first candle. At how many hours will the candles be the same height?

a)

5

b)

-5

c)

4

d)

8