Solve the problem.The charges for renting a moving van are $65 for the first 20 miles and $5 for each additional mile. Assume that a fraction of a mile is rounded up. Find a symbolic representation for a function f that computes the cost of driving the van x miles, where 
(Hint: express f as a piecewise-constant function.) Then, determine the cost of driving the van 94 miles.
A. f(x) = 
; $635
B. f(x) = 
; $6480
C. f(x) = 
; $635
D. f(x) = 
; $435
Answer: D
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Provide an appropriate response.The number of loaves of whole wheat bread left on the shelf of a local quick stop at closing (denoted by the random variable X) varies from day to day. Past records show that the probability distribution of X is as shown in the following table. Find the probability that there will be at least three loaves left over at the end of any given day. 
A. 0.20 B. 0.65 C. 0.35 D. 0.15
Solve the problem.Assume the total revenue from the sale of x items is given by 
while the total cost to produce x items is 
Find the approximate number of items that should be manufactured so that profit, 
is maximum.
A. 63 items B. 20 items C. 77 items D. 90 items
Evaluate the determinant.
A. -286 B. 1392 C. 34 D. -34
Calculate the values of x and y in the following table. Gear A Gear B Number of teeth rpm Number of teeth rpm 40 700 25 x 50 56 y 80
A. x = 1,120, y = 35 B. x = 1,125, y = 72 C. x = 560, y = 35 D. x = 2,240, y = 72 E. x = 1,125, y = 36