Solve the exponential equation.64 = 45x ? 16x2
A. 3 , - 
B. 3 , 4
C. -3 , -4
D. -3 , 
Answer: D
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For the pair of functions, find the indicated composition.f(x) = 
x, g(x) = - 
xFind (f ? g)(x).
A. x B. 1 C. 0 D. -x
Solve the problem.The price p and x, the quantity of a certain product sold, obey the demand equation p = - 
x + 100, {x|0 ? x ? 1000}a) Express the revenue R as a function of x.b) What is the revenue if 450 units are sold?c) Graph the revenue function using a graphing utility.d) What quantity x maximizes revenue? What is the maximum revenue?e) What price should the company charge to maximize revenue?
What will be an ideal response?
Specify the center and radius of the circle.5x2 + 5y2 + 30x - 10y - 75 = 0
A. center: (3, -1); radius: 25 B. center: (1, -3); radius: 5 C. center: (-3, 1); radius: 5 D. center: (-1, 3); radius: 25
Simplify the expression. Assume that all variables are positive when they appear.-6
- 8
A. 22
B. -10
C. -14
D. -22