Find the product.5x4(-2x7 - 8x6 + 4)
A. -10x11 - 8x6 + 4
B. -10x11 - 40x10 + 20x4
C. -10x7 - 40x6 + 20
D. -10x11 - 40x10
Answer: B
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The function 
satisfies the equation of change 
. For what value of f is f increasing at the fastest rate? Round your answer to two decimal places, if necessary.
?
A. ?
B. ?
C. 
D. ?
Find all solutions by factoring.13m2 - 3m = 0
A. {
, 0}
B. {0}
C. {- 
, 0}
D. {
, - 
}
Solve the problem.When P dollars is invested at interest rate i, compounded annually, for t years, the investment grows to A dollars, where A = P(1 + i) t . Find the interest rate i if $2510 grows to $3540 in 2 years. Round your answer to the nearest hundredth of a percent.
A. 20.52 % B. 18.76 % C. 9.38 % D. 41.04 %
Solve the problem.The radius, r, of a sphere can be found using the formula 
where S is the surface area. If the surface area is 15,253 square inches, what is the radius? (Use 3.14 for ?, and round your answer to the nearest tenth of an inch.)
A. 109.4 in. B. 34.8 in. C. 61.8 in. D. 69.6 in.