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If and bc= 7, which of the following statements must be true?

(A) a and bare directly proportional.

(B) aand care inversely proportional.

(C) aand d are inversely proportional.

(D) band care directly proportional.

(E) cand dare inversely proportional.

The Correct Answer
Explanation

For what value of x, if any, is the equation (x - 1)2 = (x - 7)2 true?

(F) -4

(G) -1

(H) 0

(J) 4

(K) There is no value of x for which the equation is true.

Correct Answer: J

The expression (5x + 2)(x-- 3) is equivalent to:

(A)5x2 + 13x - 6 (B) 5x2 - 13x - 6 (C) 5x2 - 4x + 5 (D) 5x2 - 6 (E) 5x2 - 5

Correct Answer: B

Pat's Pastries baked 80 apple pies and 50 loaves of apple bread to be sold at a 2-day Fall Festival. The pies were sold for $25 each and the loaves of bread were sold for $10 each. Which of the following expressions gives the total amount of money, in dollars, collected from selling all of the apple pies and B of the loaves of bread?

(A) 35B (B) 1,570B (C) B + 80 (D) 10B + 1,250 (E) 10B + 2,000

Correct Answer: E

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