Find a quadratic model for the sequence with the indicated terms.
?
a0 = 4, a2 = 0, a6 = 38
?
A. an= -4n2 
n + 
B. an = 
n2 
n - 4
C. ?an= 4n2 
n + 
D. ?an= 
n2+ 
n - 4
E. ?an= 
n2 
n + 4
Answer: E
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Perform the indicated operations. Write the answer using only positive exponents. Assume all variables represent positive real numbers.
? 
A. 
B. x22/7
C. x11/5
D. 
Find the product.23
× 2
A. 51
B. 48
C. 46
D. 50
Solve the problem.The price p and the quantity x sold of a certain product obey the demand equation p = - 
x + 140, 0 ? x ? 560.What quantity x maximizes revenue? What is the maximum revenue?
A. 560; $19,600 B. 420; $14,700 C. 280; $19,600 D. 140; $14,700
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400