Solve the problem.A well-drilling company finds that its marginal profit, in dollars, from drilling a well that is x feet deep is given by 
.Find the company's profit from drilling a well that is 220 feet deep.
A. $1770.80
B. $1328.10
C. $2175.42
D. $996.07
Answer: D
Mathematics
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Given y = f(u) and u = g(x), find dy/dx = f'(g(x))g'(x).y = u(u - 1), u = x2 + x
A. 2x2 + 4x + 1 B. 4x3 + 6x2 - 1 C. 2x2 + 4x D. 4x3 + 6x2 - 2x
Mathematics
Use the indicated formula to find the sum.Use S = n2 to find the sum of 1 + 3 + 5 + . . . + 701.
A. 123,201 B. 122,500 C. 123,202 D. 123,200
Mathematics
Find the equation of the line passing through the indicated two points. Write the equation in slope-intercept form.(3, -9) and (9, 7)
A. y = 
x - 
B. y = -2x - 3
C. x = 3
D. y = 
x - 17
Mathematics
Use the graph of y = Cax to determine C and a.
A. C = 2, a = 0.8 B. C = 2, a = 1.2 C. C = 2.88, a = 1.2 D. C = 2, a = 1.4
Mathematics