It can be shown that the area enclosed between the x-axis and one arch of the sine curve is 2. Use this fact to compute the definite integral.
dx
A. 8?
B. 2 + 8?
C. 10
D. 0
Answer: B
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Solve the problem.The voltage E in an electrical circuit is given by E = 1.5 cos 90?t, where t is time measured in seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second).
A. 45
B. 
C. 90
D. 
Graph the function as a solid curve and its inverse as a dashed curve.f(x) = 5 - x2 for x ? 0 
A. 
B. 
C. 
D. 
Use the coordinates of the indicated points to find the slope of the line.
A. - 
B. -4
C. 4
D. 
Solve the problem. Round your answer to the nearest tenth, when appropriate.A grasshopper is perched on a reed 5 inches above the ground. It hops off the reed and lands on the ground about 5.4 inches away. During its hop, its height is given by the equation 
, where x is the distance in inches from the base of the reed, and h is in inches. How far was the grasshopper from the base of the reed when it was 4.5 inches above the ground?
A. 0.4 in. B. 0.5 in. C. 3.5 in. D. 5.4 in.