Solve the problem.A company estimates that its sales will grow continuously at a rate given by the function 
where S'(t) is the rate at which sales are increasing, in dollars per day, on day t. Find the sales from the 2nd day through the 8th day. (This is the integral from 1 to 8.)
A. $2978.24
B. $44,714.37
C. $20,866.71
D. $44,673.60
Answer: D
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Solve.The gravitational attraction between two masses varies inversely as the square of the distance between them. If the force of attraction is 2.25 lb when the masses are 4 ft apart, what is the attraction when the masses are 6 ft apart?
A. 2 pounds B. 3 pounds C. 4 pounds D. 1 pound
Suppose ABC is a right triangle with C = 90°. ? If a = 15 and b = 8, find c.
Fill in the blank(s) with the appropriate word(s).
Find the distance between P and Q and the coordinates of the midpoint of the segment joining P and Q.
A. 
; 
B. 
; 
C. 
; 
D. 
; 
For the given functions f and g, find the requested function and state its domain.f(x) = 
; g(x) = 
Find f ? g.
A. (f ? g)(x) = 
; [-11, 0) ? (0, ?)
B. (f ? g)(x) = 
; [0, 11) ? (11, ?)
C. (f ? g)(x) = 
; [-11, 0) ? (0, ?)
D. (f ? g)(x) = 
; (-?, 0) ? (0, ?)