Solve the problem.Given the following revenue and cost functions, find the x-value that makes revenue a maximum. R(x) = 84x - 2x2; C(x) = 22x + 101
A. 21
B. 22
C. 20
D. 42
Answer: A
Mathematics
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Evaluate the integral by using multiple substitutions.
dx
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Mathematics
Solve the problem.Barnes and Able sell life, health, and auto insurance. Sales for May and June are given in the matrices. Life Health AutoM = 
J = 
Use matrix addition to determine the total sales for each type of insurance
for each salesperson.
A. Life Health Auto 
B. Life Health Auto
C. Life Health Auto
D. Life Health Auto 
Mathematics
Solve the equation.e6x - 1 = (e4)-x
A. 
B. {0}
C. 
D. 
Mathematics
Provide the proper response.True or false? If the graph of a function f is concave down on its entire domain, then f' is increasing.
A. True B. False
Mathematics