Solve the problem.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) ? 16 as x ? ?.
B. 
A(x) ? 0 as x ? ?.
C. 
A(x) ? 11 as x ? ?.
D. 
A(x) ? 1 as x ? ?.
Answer: C
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Express the integrand as a sum of partial fractions and evaluate the integral.
A. -4 ln 
+ 10ln
- 4ln
+ C
B. -14 ln 
+ 10ln
+ C
C. - 
+ 10ln
+ 4ln
+ C
D. -14 ln 
+ 10ln
+ 4ln
+ C
Solve the problem.Roberto invested some money at 8%, and then invested $5000 more than twice this amount at 12%. His total annual income from the two investments was $4760. How much was invested at 12%?
A. $3100 B. $31,000 C. $15,000 D. $26,000
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. - 
B. 
C. -1
D. - 
Solve the problem.The price p and the quantity x sold of a certain product obey the demand equation: 
What is the revenue to the nearest dollar when 300 units are sold?
A. $7500 B. $52,500 C. $70,000 D. $10,000