Solve the problem.The cost of a computer system increases with increased processor speeds. The cost C of a system as a function of processor speed is estimated as 
where S is the processor speed in MHz. Find the processor speed for which cost is at a minimum.
A. 2.2 MHz
B. 0.4 MHz
C. 5.4 MHz
D. 0.3 MHz
Answer: D
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Find the limit.
A. 0 B. 2 C. 1 D. No limit
Find the position vector for the vector having initial point P and terminal point Q.P = (1, 3, 0) and Q = (-3, -1, 3)
A. v = 2i - 4j - 3k B. v = -3i - 4j - 4k C. v = -4i - 4j + 3k D. v = 4i + 4j - 3k
Use the fundamental identities to simplify the expression.1 - cos2 ?
A. sin ? B. - sin2 ? C. tan2 ? D. sin2 ?
Provide an appropriate response.A tennis racket company has manufacturing costs given by the equation C = 
where x is the number of rackets manufactured and C is the cost to manufacture each racket. What number of rackets must be manufactured to bring the cost per racket to $4?
A. 40,000 rackets B. 44,000 rackets C. No number of rackets manufactured satisfies this goal. D. Not enough information is given to answer this question.