Quiz about SF7 Unit 4 Quiz Review

Question 1

x + 5 = 10

Accepted Answer

5

Answer

2

Answer

10

Answer

15

Question 2

4x = -20

Accepted Answer

-5

Answer

-24

Answer

5

Answer

80

Question 3

x - 7 = -3

Accepted Answer

4

Answer

-10

Answer

-4

Answer

10

Question 4

3.5x = 18.2

Accepted Answer

5.2

Answer

14.7

Answer

21.7

Answer

63.7

Question 5

5(x - 3) = 35

Accepted Answer

10

Answer

7.6

Answer

27

Answer

33

Question 6

2x + 2.5 = 5.9

Accepted Answer

1.7

Answer

6.8

Answer

4.2

Answer

0.45

Question 7

-4x - 6 = -10

Accepted Answer

1

Answer

-4.5

Answer

-1

Answer

4

Question 8

Mr. Fitzpatrick recently replaced his sidewalk. He paid $425 for the concrete which cost $50 a yard. He received y yards of concrete. The delivery fee was $75. Which equation models this situation?

Accepted Answer

50y + 75 = 425

Answer

50 + 75 = 425

Answer

50 + 75y = 425

Answer

(50 + 75)y = 425

Question 9

Which expression is equal to $$13x\ +\ 2\left(12\ +\ 3x\right)$$

Accepted Answer

$$19x\ +\ 24$$

Answer

$$16x\ +\ 24$$

Answer

$$16x\ +\ 14$$

Answer

$$19x\ +\ 14$$

Question 10

Simplify this expression: $$-\frac{1}{4}\left(-16\ -\ 8x\ +\ 4y\right)\ =$$

Accepted Answer

$$4\ +\ 2x\ -\ y$$

Answer

$$5xy$$

Answer

$$4\ +\ 2x\ +\ y$$

Answer

$$4\ -\ 8x\ +4y$$

Question 11

$$12\left(-2m\ +\ 3\right)\ =\ $$

Accepted Answer

$$-24m\ +\ 36$$

Answer

$$13m$$

Answer

$$-24m\ +\ 3$$

Answer

$$10m\ +\ 36$$

Question 12

The perimeter of this rectangle can be expressed by ALL of the expressions, EXCEPT:

Accepted Answer

$$5y\left(4y\ +3\right)$$

Answer

$$10y\ +\ 8y\ +6$$

Answer

$$2\left(5y\right)+2\left(4y+3\right)$$

Answer

$$2\left(9y+3\right)$$

Question 13

Distribute:

$$-\frac{2}{3}\left(-12a\ +9b\right)=$$

Accepted Answer

$$8a-6b$$

Answer

$$-4a+3b$$

Answer

$$-8a+6b$$

Answer

$$4a-3b$$

Question 14

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat. How many hours did they rent the boat for if the total cost was $33.

Accepted Answer

9 hours

Answer

2 hours

Answer

6 hours

Answer

24 hours

SF7 Unit 4 Quiz Review

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