Solve for rate in the problem. Round to the nearest tenth of a percent.4.1 cases is % of 20.0 cases.
A. 0.2
B. 487.8
C. 4.9
D. 20.5
Answer: D
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Find the limit.
A. 1
B. 5
C. 0
D. 
Solve the problem.Suppose that R ={(x, y): 0 ? x ? 4, 0 ? y ? 4}, and P is the partition of R into four equal squares by the lines x =2 and y = 2. 
approximate 
by calculatiang the Riemann sum 
, assuming that 
are the centers of the four squares.
A. 96 B. 48 C. 384 D. 192
Solve the problem.The accompanying figure shows the graph of y = -x2 shifted to a new position. Write the equation for the new graph.
A. y = -x2 - 3 B. y = -(x - 3)2 C. y = -x2 + 3 D. y = -(x + 3)2
Using the derivative of f(x) given below, determine the intervals on which f(x) is increasing or decreasing.f'(x) = (x - 7) e-x
A. Increasing on (-?, 7); decreasing on (7, ?) B. Decreasing on (-?, 7); increasing on (7, ?) C. Decreasing on (-?, -7); increasing on (-7, ?) D. Increasing on (-?, -7); decreasing on (-7, ?)