Use the given substitution to express the given radical expression as a trigonometric function without radicals. Assume that 0 < ? < ?/2.Let x = 6 cos ? in 
.
A. 6 cos ? tan ?
B. 6 sin ? cot ?
C. cos ? csc ?
D. 6 cos ? cot ?
Answer: D
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = x, y = 0, x = 1, x = 3
A. 5?
B. 4?
C. 
?
D. 
?
Use a calculator with a 
key or a 
key to solve the problem.The exponential function f(x) = 47.36(1.027)x describes the population of a certain country, y, in millions, in year x. a) Substitute 0 for x and, without using a calculator, find the country's population in year 0. b) Find the country's population in year 27 as predicted by this function.
A. a) 1 million; b) 102.554 million B. a) 47.36 million; b) 97.233 million C. a) 47.36 million; b) 99.858 million D. a) 1.027 million; b) 94.677 million
Round the number as indicated.692,429 to the nearest hundred thousand
A. 500,000 B. 600,000 C. 1,000,000 D. 700,000
Use the product rule to multiply. Assume all variables represent positive real numbers.
? 
A. 
B. 
C. 
D. 