Determine where the given function is concave up and where it is concave down. f(x) = (x - 2)1/3 - 6
A. Concave up on (-?, ?)
B. Concave down on (-?, 2) and (2, ?)
C. Concave down on (-?, 2), concave up on (2, ?)
D. Concave up on (-?, 2), concave down on (2, ?)
Answer: D
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Change the number to polar form and then perform the indicated operations. Express the result in rectangular form.(5 - 9j)(9 + 5j)
A. 0 - 106j B. 90 - 56j C. -45j2 - 56j + 45 D. 90 + 56j
Perform the indicated operations.Estimate by rounding to the nearest thousand, then find the actual sum.
A. Estimate: 9,000 Actual: 8,205 B. Estimate: 7,700 Actual: 7,665 C. Estimate: 8,000 Actual: 7,670 D. Estimate: 3,000 Actual: 7,665
A certain piece of machinery was purchased 2 year(s) ago by Garland Mills for $500,000. Its present resale value is $320,000. Assuming that the machine's resale value decreases exponentially, what will it be 2 year(s) from now? ?
A. The resale value of the machinery will be $204,800 B. The resale value of the machinery will be $205,911 C. The resale value of the machinery will be $204,789 D. The resale value of the machinery will be $204,911
Add or subtract. Express the answer as a mixed number.7
+ 12
A. 18
B. 7
C. 20
D. 19