Find a? b.a = 6i + 2j, b = 2i + 4j
A. 20
B. -4
C. 
D. 
Answer: A
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Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.
3
A. 
B. 
C. 
D. 
Solve the problem.Find the exponential function f that models this data. Round the coefficients to the nearest hundredth.
A. f(x) = (13.21)(1.03)x B. f(x) = (0.62)(7.58)x C. f(x) = (7.58)(0.62)x D. f(x) = (14.21)(1.03)x
Determine whether the functions f and g are inverses of each other.f(x) = x3 + 2; g(x) = 
- 2
A. Yes B. No
Solve the problem.A farmer's silo is the shape of a cylinder with a hemisphere as the roof. If the height of the silo is 61 feet and the radius of the hemisphere is r feet, express the volume of the silo as a function of r.
A. V(r) = 61?r2 + 
?r3
B. V(r) = ?(61 - r)r3 + 
?r2
C. V(r) = ?(61 - r) + 
?r2
D. V(r) = ?(61 - r)r2 + 
?r3