Evaluate the expression without the use of a calculator, and then verify your answer using a calculator.ln l
A. -1
B. e
C. 1
D. 0
Answer: D
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 1; local maximum at x = -1; concave down on (-?, ?) B. Local minimum at x = 1; local maximum at x = -1; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 1; local maximum at x = -1; concave up on (0, ?); concave down on (-?, 0) D. Local minimum at x = 1; local maximum at x = -1; concave up on (-?, ?)
Solve the problem that involves probabilities with dependent events. An IRS auditor randomly selects 3 tax returns (without replacement) from 49 returns of which 9 contain errors. What is the probability that she selects none of those containing errors?
A. 0.0062 B. 0.5363 C. 0.0046 D. 0.544
Estimate the sum as indicated. Then answer the question.Estimate the following sum by first rounding to the nearest ten. Does the estimate give you reason to doubt the stated sum?
A. Estimate: 180 ; yes B. Estimate: 140 ; yes C. Estimate: 160 ; no D. Estimate: 170 ; no
Given the following equation, set y = 0 and solve the resulting equation.
a. x = -4 b. x = -4, 4 c. x =3, 3 d. x =-3 e. x = 4