Determine the values of x for which the function is differentiable.y = x2 - 16
A. All real numbers except 16
B. All real numbers except 4
C. All real numbers
D. All real numbers except -4 and 4
Answer: C
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Compute the expected age ? of a British nurse in 1851. Assume that the table below shows the age distribution of nurses in Great Britain in 1851. Round your answer to nearest hundredth. Age range (yr)20-29 30-39 40-49 50-59 60-69 70-79 80+ Midpoint (x)24.5 34.5 44.5 54.5 64.5 75.5 84.5 Percent of nurses5.8% 9.8% 19.4% 29.1% 25.1% 9.1% 1.7%
A. 54.50 B. 59.50 C. 53.76 D. 53.79 E. 43.79
Solve the problem.In an arithmetic sequence with first term P0 and common difference d, the sum of the first 400 terms is given by
A. 100(2P0 + 399d). B. 200(2P0 + 400d). C. 200(2P0 + 200d). D. 100(2P0 + 200d). E. none of these
Solve the problem.If Marco hired a plumber for 5 hours the total cost would be $170. If he hired the same plumber for 13 hours , the total cost would be $410. Assume a linear relationship between the cost, y, in dollars and the number of hours worked, x. Find an equation in slope-intercept form that models the relationship between the cost and the number of hours worked.
A. y = 30x + 20 B. y = 30x + 20x C. y = 35x + 20 D. y = 30x + 60
Find the area.
A. 16 ft2 B. 55 ft2 C. 32 ft2 D. 27.5 ft2