Solve the equation involving fractions.
+ 
= 0
A. -2, -15
B. 2, 5
C. -5, 2
D. 2, 15
Answer: D
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Solve and graph.|x| ? 2
A. {x
x < -2 or x > 2}, or (-?, -2) ? (2, ?)
B. {x
x ? -2 or x ? 2}, or (-?, -2] ? [2, ?)
C. {x
x ? 2}, or [2, ?)
D. {x
-2 ? x ? 2}, or [-2, 2]
Using the derivative of f(x) given below, determine the critical points of f(x).f'(x) = (x - 5)2(x + 6)
A. -6, 5 B. -5, 0, 6 C. -5, 6 D. -6, -5, 5
Solve the problem.The price p of a certain product and the quantity sold x obey the demand equation p = - 
x + 200, 0 ? x ? 300. Suppose that the cost C of producing x units is C = 
+ 800. Assuming that all items produced are sold, find the cost C as a function of the price p.
What will be an ideal response?
Solve.An endangered species of fish has a population that is decreasing exponentially 
The population 9 years ago was 1600. Today, only 700 of the fish are alive. Once the population drops below 100, the situation will be irreversible. When will this happen, according to the model? Round to the nearest year.
A. 22 yr B. 23 yr C. 21 yr D. 20 yr