**Q9: **

Write an expression for triple a number .

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- E

**Q10: **

Write an expression for a number multiplied by 12.

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- E

**Q11: **

Consider the shown trapezoid.

Write an expanded expression for its area. Simplify the expression, if possible.

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- E

The given trapezoid is the cross section of a prism of length . Write an expanded expression for the volume of the prism. Simplify the expression, if possible.

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**Q12: **

Consider the shown trapezoid.

Write an expanded expression for its area. Simplify the expression, if possible.

- A
- B
- C
- D
- E

The given trapezoid is the cross section of the given prism of length .

Write an expanded expression for the volume of the prism. Simplify the expression, if possible.

- A
- B
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- D
- E

**Q13: **

Using to represent the cost of a notebook and to represent the cost of a folder, write an expression for the cost of 3 notebooks and 2 folders. Then, find the total cost, given that the notebooks are $1.69 each and the folders are $0.59 each.

- A , $5.15
- B , $5.15
- C , $5.98
- D , $6.25
- E , $4.99

**Q14: **

Given that a day consists of 24 hours, write an expression that relates the number of days in terms of hours, and then determine how many hours there are in 3 days.

- A , 144 hours
- B , 27 hours
- C , 21 hours
- D , 72 hours
- E , 96 hours

**Q15: **

What is the area of a square of perimeter ?

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- E49