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Two contractors bid on a job to build a brick wall in a yard. Contractor A charges a flat fee of $1,600 plus $2 per brick. Contractor B charges a flat fee of $400 plus $8 per brick. If x represents the number of bricks in the wall, which of the following equations could be solved to determine the number of bricks which would make B's charge to build the wall equal to A's charge?

(A)1600 + 2x = 400 + 8x

(B) 1600 + 8x = 400 + 2x

(C) 2x + 8x = x

(D) 2x + 8x = 1600

(E) 2x + 8x = 400

What is the slope of the line 9x– 3y= 10?

(F) 3(G) –3(H) 9(J) (K)

Correct Answer: F

In a data set of 5 points, the mean, median, and mode are each equal to 8. Which of the following could be the data set?

(F) {5, 7, 8, 8, 12} (G) {7, 7, 8, 8, 12} (H) {7, 8, 8, 8, 12} (J) {7, 8, 8, 10, 12} (K) {7, 8, 8, 12, 12}

Correct Answer: F

The line with equation 5y - 4x = 20 does NOT lie in which quadrant(s) of the standard (x, y) coordinate plane below?

(A) Quadrant I only (B) Quadrant II only (C) Quadrant III only (D) Quadrant IV only (E) Quadrants I and III only

Correct Answer: D