The Thoroughbred Bus Company finds that its monthly costs for one particular year were given by 
dollars after t months. After t months, the company had 
passengers per month. How fast
was its cost per passenger changing after 4 months? Round your answer to the nearest cent.
?
A. $0.29 per month
B. $0.01 per month
C. -$0.21 per month
D. $0.46 per month
E. $0.07 per month
Answer: B
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Determine whether the two given lines are perpendicular.y = -4xx = 9
A. Yes B. No
For the graph below, use the nearest neighbor algorithm to find an approximate minimum Hamilton circuit and its weight, starting at the indicated vertex.
Starting at C
A. C ? B ? E ? A ? D ? C; weight = 28 B. C ? B ? E ? D ? A ? C; weight = 30 C. C ? E ? A ? B ? D ? C; weight = 27 D. C ? D ? A ? B ? E ? C; weight = 28
Find the distance between the planes.
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Find the value of the indicated trigonometric function of the angle ? in the figure. Give an exact answer with a rational denominator.
Find cos ?.
A. 
B. 
C. 
D. 