Determine if the proportion is true or false.
= 
A. False
B. True
Answer: B
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Solve.The average value of a certain type of automobile was $13,980 in 1992 and depreciated to $5040 in 1996. Let y be the average value of the automobile in the year x, where x = 0 represents 1992. Write a linear equation that relates the average value of the automobile, y, to the year x.
A. y = -2235x - 3900
B. y = -2235x + 13,980
C. y = -2235x + 5040
D. y = - 
x - 5040
Solve.The average cost per tape, in dollars, for a company to produce x sports videotapes is given by the functionA(x) = 
for x > 0
Graph the function on the interval (0, ?) and complete the following:A(x) ? 
as x ? ?.
A. 
A(x) ? 1 as x ? ?.
B. 
A(x) ? 0 as x ? ?.
C. 
A(x) ? 15 as x ? ?.
D. 
A(x) ? 20 as x ? ?.
Change the exponential expression to an equivalent expression involving a logarithm.45/2 = 32
A. 
= 4
B. log432 = 
C. log54 = 
D. log324 = 
In the problem, sin ? and cos ? are given. Find the exact value of the indicated trigonometric function.sin ? = 
, cos ? = 
Find tan ?.
A. 
B. 
C. 
D. 