Find the product.-4x(x + 5)
A. -4x2 - 20x
B. x2 - 20x
C. -4x2 + 5x
D. -24x2
Answer: A
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Solve the problem.The distance in miles that can be seen on the surface of the ocean is given by 
where h is the height in feet above the surface of the water. How many feet high above the water (to the nearest tenth) would a pirate have to climb to see 16 miles?
A. 501.8 ft B. 65.3 ft C. 130.6 ft D. 5.6 ft
Solve by the elimination method. x = 6 - y8x + 8y = 48
A. Infinitely many solutions B. No solution C. (0, 0) D. (1, 5)
Evaluate.
A. 12 B. Not a real number C. 60 D. 11
Solve.A man rode a bicycle for 12 miles and then hiked an additional 8 miles. The total time for the trip was 5 hours. If his speed when he was biking was 10 mph faster than his speed when he was hiking, then at what speed was he biking?
A. 11.5 mph B. 12 mph C. 13 mph D. 14.5 mph