Solve the problem.A computer firm markets two kinds of electronic calculator that compete with one another. The total revenue function is 
where p is the price of the first calculator (in multiples of $10), and q is the price of the second calculator (in multiples of $10). What prices should be charged in order to maximize the total revenue?
A. $15 and $155
B. $5 and $90
C. $20 and $120
D. $40 and $170
Answer: A
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Provide an appropriate response.You are asked to change 5
to an improper fraction. What should be your first step?
A. Multiply 8 and 5. B. Divide 8 by 13. C. Multiply 13 and 5. D. Add 5 and 8.
Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set.-4x + 3z = 16-5x + 6y - 8z = -62 2x - 4y = -4
A. {(2, 8, 2)} B. {(2, -2, -8)} C. ({3, 0, 8)} D. {(2, 2, 8)}
Write the number as a fraction. Do not simplify.0.992
A. 
B. 
C. 
D. 
Find the equation that the given graph represents and give the domain, range, and interval(s) over which the function is increasing and decreasing.
A. P(x) = x4 - 2x2 - 3x + 12; domain: (-?, ?); range: (-?, ?); Increasing over (-?, -1.21] and [.97, ?); Decreasing over [-1.21, .97] B. P(x) = 2x3 - 12x2 - 5x - 12; domain: (-?, ?); range: (-?, ?); Increasing over [-.98, 3.09]; Decreasing over (-?, -.98] and [3.09, ?) C. P(x) = -3x5 + 2x4 - x2 + 2x - 12; domain: (-?, ?); range: (-?, ?); Increasing over (-?, -1.33] and [.67, ?); Decreasing over [-1.33, .67] D. P(x) = -3x3 - 10x2 + 5x + 12; domain: (-?, ?); range: (-?, ?); Increasing over [-2.47, .19]; Decreasing over (-?, -2.47] and [.19, ?)