Solve the problem.While traveling at a constant speed in a car, the centripetal acceleration passengers feel while the car is turning is inversely proportional to the radius of the turn. If the passengers feel an acceleration of 27 feet per second per second when the radius of the turn is 80 feet, find the acceleration the passengers feel when the radius of the turn is 240 feet.
A. 5 ft/sec2
B. 4 ft/sec2
C. 6 ft/sec2
D. 3 ft/sec2
Answer: D
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Simplify the difference quotients 
and 
for the following function. Rationalize the numerator when necessary.f(x) = 9x + 2
A. 9; 9 B. 9h; 9a C. 9x - 9h; 9x - 9a D. 9; 9x - 9a
Determine whether A = B, A ? B, B ? A, A ? B, B ? A, or if none of these applies.A = {a, e, i, o, u}B = {e, o, i, u, a}
A. A ? B, B ? A, and A = B B. A ? B, B ? A, and A = B C. None of these D. A = B
Solve the problem.A measure of diversity of species in an ecological community is given by the formula 
where P1, P2, ... ,Pn are the proportions of a sample belonging to each of n species found in the sample. A sample of a community shows three species with 48 individuals each. Find the index of diversity H.
A. 1 B. 0.53 C. 2.1 D. 1.6
Write the following as a rate in lowest terms.15 tests for 75 students
A. 
B. 
C. 
D. 