Solve and, when appropriate, round the answer to the nearest tenth.The distance d 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. How high (to the nearest foot) would a platform have to be to see a distance of 10.5 miles?
A. 165.5 ft
B. 110.3 ft
C. 70 ft
D. 49 ft
Answer: D
Mathematics
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Find the exact value under the given conditions.Given sin ? = - 
, with ? in quadrant IV, and tan ? = - 
, with ? in quadrant II. Find cos (? + ?).
A. - 
B. 
C. 
D. - 
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Determine whether or not the function is one-to-one.f(x) = x3 - 3
A. No B. Yes
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Use synthetic division to find the function value.f(x) = x5 - 8x4 + 17x3 - 4x - 100; find f(2).
A. -66 B. -68 C. 132 D. -70
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Round the decimal to the given place value.1.432 to the nearest hundredth
A. 1.44 B. 1.42 C. 1.4 D. 1.43
Mathematics