Sales of computers are subject to seasonal fluctuations. Computer City's sales of computers in 1995 and 1996 can be approximated by the function
?
?
where t is time in quarters (
represents the end of the first quarter of 1995) and 
is computer sales (quarterly revenue) in billions of dollars. Estimate Computer City's maximum and minimum quarterly revenue from computer sales.
?
A. 
,
B. 
,
C. 
,
D. 
,
E. 
, 
Answer: E
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A point on the terminal side of an angle ? is given. Find the exact value of the indicated trigonometric function of ?.(-4, -1)Find sec ?.
A. - 
B. -
C. - 
D. 
Provide an appropriate response.In the FIFO method, the cost of goods available for sale is relatively close to the current cost of purchasing additional items.
A. True B. False
The graph of a function f is given. On the same axes, sketch the graph of f-1. 
A. 
B. 
Solve the problem.A driver wants to gauge the fuel efficiency of her vehicle at speeds of 30 mph and above. She notices that traveling at an average speed of 30 mph results in a rating of 29 mpg, where as at an average speed of 35 mph, her car rates 19 mpg. Find a linear function 
whose input is the speed in miles per hour and whose output is the gas mileage in miles per gallon.
A. f(x) = 
x + 89
B. f(x) = 
x + 31
C. f(x) = - 2x + 31
D. f(x) = - 2x + 89