Solve.John owns a hotdog stand. He has found that his profit is represented by the equation 
with P being the profit in dollars, and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit?
A. 49 hotdogs
B. 30 hotdogs
C. 24 hotdogs
D. 31 hotdogs
Answer: B
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Find a Cartesian equation for the parametric equations.x = cot t, y = csc2t - 1
A. y = x2 B. y = x2 + 1 C. y = x2 - 1 D. y = x
Determine the absolute value of the complex number.z = -9 - 6i
A. i
B. 3
C. 3
D. i
Find the inverse of the function.f(x) = 
+ 1
A. f-1(x) = (x - 1)3
B. f-1(x) = 
- 1
C. f-1(x) = x3 - 1
D. f-1(x) = (x + 1)3
Solve the problem.A can in the shape of a right circular cylinder is required to have a volume of 700 cubic centimeters. The top and bottom are made up of a material that costs 8¢ per square centimeter, while the sides are made of material that costs 5¢ per square centimeter. Which function below describes the total cost of the material as a function of the radius r of the cylinder?
A. C(r) = 0.16?r2 + 
B. C(r) = 0.08?r2 + 
C. C(r) = 0.08?r2 + 
D. C(r) = 0.16?r2 + 