Calculate.23.75 ÷ 2
A. 10.2
B. 9.59
C. 9.3
D. 9.5
Answer: D
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The outside wall of a house is 11 feet high. From the western wall, the roof rises 6 feet over a horizontal span of 24 feet and then descends at the same rate over another horizontal span of 24 feet to the eastern wall of the house. For this problem, take the origin to be at the base of the west wall, and take west-to-east to be the positive direction. ? ? A: Find a formula that describes the ascending part of the roof. Use d for the horizontal distance east of the west wall and H for the height above the ground, both in feet. ? B: Find a formula that describes the descending part of the roof. ? C: Find a formula for a piecewise-defined function that describes the entire roof line. ?
What will be an ideal response?
Decide whether or not the functions are inverses of each other.f(x) = (x - 2)2, x ? 2; g(x) = 
A. Yes B. No
Solve.Boris is planning a border for his triangular-shaped garden. One side of the garden is 13.8 feet long, another side is 14.9 feet long, and the third side is 19.0 feet long. Find the amount of border material needed.
A. 47.7 ft B. 47.8 ft C. 45.7 ft D. 46.7 ft
Find an equation of the tangent line at x = a.y = x2 - 2; a = -2
A. y = -4x - 6 B. y = -2x - 6 C. y = -4x - 12 D. y = -4x - 10