Complete.10 min = sec
A. 240
B. 120
C. 300
D. 600
Answer: D
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Solve the problem. Round your answer, if appropriate.As the zoom lens in a camera moves in and out, the size of the rectangular image changes. Assume that the current image is 
Find the rate at which the area of the image is changing (dA/df) if the length of the image is changing at 0.7 cm/s and the width of the image is changing at 0.4 cm/s.
A. 14.0 cm2/sec B. 14.6 cm2/sec C. 7.3 cm2/sec D. 7.0 cm2/sec
Evaluate the sum.
A. 55,260 B. 230 C. 30 D. -230
Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = csc(cot x)
A. y = csc u; u = cot x; 
= csc3 x cot x
B. y = cot u; u = csc x; 
= csc2(csc x) csc x cot x
C. y = csc u; u = cot x; 
= - csc(cot x) cot(cot x)
D. y = csc u; u = cot x; 
= csc(cot x) cot(cot x) csc2 x
A bus company operates four bus routes (A, B, C, and D) and 50 buses. The buses are apportioned among the routes on the basis of average number of daily passengers per route which is given in the following table.
In process of applying Hamilton's method, the route receiving the "extra" bus is
A. Route D. B. Route C. C. Route B. D. Route A. E. none of these