15. The area of a rectangle is 6 n 2 + n − 2 . 6 n squared , plus n minus 2 .  Which expression could represent the perimeter of the rectangle?

    1. 2 n − 1 2 n minus 1
    2. 3 n + 2 3 n plus 2
    3. 5 n + 1 5 n plus 1
    4. 10 n + 2 10 n plus 2

16. A company sells calculators for $35 each. Businesses must order a minimum of 100 calculators, and they must pay a shipping cost of $50. Which amount of money represents a reasonable sum that a business might spend to purchase calculators?

    6. $750
    7. $1070
    8. $2990
    9. $3585

17. Which expression is equivalent to 3 x 3 y ( 3 y ) − 2 ? fraction 3 x cubed , y , over open , 3 y , close super negative 2 end super end fraction . question mark

    1. 9 x 3 y 3 9 x cubed . y cubed
    2. x 3 y fraction x cubed , over y end fraction
    3. 27 x 3 y 3 27 x cubed . y cubed
    4. x 3 y 3 3 fraction x cubed , y cubed , over 3 end fraction

18. The formula for the volume V of a pyramid is V = 1 3 B h , v equals , 1 third b h comma  where B is the area of the base of the pyramid and h is the height of the pyramid. Which equation represents the height of the pyramid in terms of V and B?

    6. h = 3 V B h equals , fraction 3 v , over b end fraction
    7. h = V 3 B h equals , fraction v , over 3 b end fraction
    8. h = 3 V B h equals 3 v b
    9. h = B 3 V h equals , fraction b , over 3 v end fraction

GRIDDED RESPONSE

19. An artist is making a scale model of a ladybug for an insect museum. What is the length in millimeters of the actual ladybug that the artist is using to make this model?

    

20. A flagpole casts a shadow that is 9.1 m long. At the same time, a meter stick casts a shadow that is 1.4 m long. How tall is the flagpole in meters?

21. What is the seventh term in the following sequence?

    81, 27, 9, 3, 1, …

22. Suppose you have $200. Sweaters cost $45 each. What is the greatest number of sweaters you can buy?
23. How many whole-number solutions does the inequality | x − 5 | ≤ 8 vertical line x minus 5 vertical line less than or equal to 8  have?
24. Line m passes through ( − 9 , negative 9 comma  4) and (9, 6). What is the y-intercept of line m?

25. You made a graph to model the height of a tree each year since you planted it.

    

    Suppose the tree had been 5 ft tall when you planted it. How tall would the tree be in 6 yr? Assume its growth rate did not change.

26. A laundromat charges $2.25 to wash one load of clothes and $1.75 to dry one load. The machines accept only quarters. To wash and dry one load of clothes, how many quarters would you need?
27. Suppose that x y = 0 x y equals 0  and y =   3 1 2 . equals 3 , and 1 half . .  What is the value of x + 3y?

Short Response

28. The formula for the area A of a trapezoid is A = 1 2 h ( b 1 + b 2 ) , eh equals , 1 half , h . open . b sub 1 , plus , b sub 2 . close . comma  where h is the height of the trapezoid and b 1 b sub 1  and b 2 b sub 2  are the lengths of its two bases.

    Suppose the height of a trapezoid is x − 2 . x minus 2 .  The lengths of the bases are x + 2 and 3 x − 2 . 3 x minus 2 .  What polynomial in standard form represents the area of the trapezoid? Show your work.

29. A monthly subway pass costs $60. A one-ride ticket costs $1.80. You plan to ride the subway to school and back for 21 days this month. How much more money would you spend to buy one-way tickets than to buy a monthly pass? Show your work.

Extended Response

30. Jeremy purchases a home for $200,000. He pays a down payment equal to 20% of the purchase price. He gets a home loan for the remainder of the purchase price.

    1. What is the amount of Jeremy's home loan?
    2. In addition, Jeremy pays closing costs that equal 3% of the amount of the home loan. How much does Jeremy pay altogether for the down payment and the closing costs?

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