Simplify.{[57 - 2 ? 5] - [72 ÷ (1 + 2)]} ? 4
A. 84
B. 116
C. 136
D. 92
Answer: D
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Solve.The population of a town was about 47,000 in 1910. In 1935, the population was about 83,000. Assuming the exponential model, what was the growth rate of the town, to the nearest hundredth of a percent, during this period?
A. 2.27 % per year B. 4.4 % per year C. 1.26 % per year D. 22.75 % per year
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 = 0; local maximum at x = 2; concave down on (0, ?); concave up on (-?, 0) B. Local minimum at x = 2; local maximum at x = 0; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 2; local maximum at x = 0; concave up on (0, ?); concave down on (-?, 0) D. Local minimum at x = 0; local maximum at x = 2; concave up on (0, ?); concave down on (-?, 0)
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 801. Find a linear function which fits this data.
A. y = -4.525x + 484.25 B. y = 4.0725x + 488.25 C. y = 4.0725x - 488.25 D. y = 4.525x + 484.25
Given 2+i is a root, determine all other roots of
What will be an ideal response?