Question
Compare the estimated average rate of change for the graphed cubic function b (x) = ^3square root 3x + 9 to the estimated average rate of change of the square root function d (x) = square root of -3x + 9 over the interval [-12, -3]. Which comparison is true?
A. The estimated average rate of change of d (x) is greater than the estimated average rate of change of b (x), but both rates are negative.
B. The estimated average rate of change of b (x) is greater than the estimated average rate of change of d (x) because b (x) is increasing over the interval but d (x) is decreasing.
C.The estimated average rate of change of d (x) is greater than the estimated average rate of change of b (x) because d (x) is increasing over the interval but b (x) is negative.
D. The estimated average rate of change of b (x) is greater than the estimated average rate of change of d (x), but both rates are positive.
A. The estimated average rate of change of d (x) is greater than the estimated average rate of change of b (x), but both rates are negative.
B. The estimated average rate of change of b (x) is greater than the estimated average rate of change of d (x) because b (x) is increasing over the interval but d (x) is decreasing.
C.The estimated average rate of change of d (x) is greater than the estimated average rate of change of b (x) because d (x) is increasing over the interval but b (x) is negative.
D. The estimated average rate of change of b (x) is greater than the estimated average rate of change of d (x), but both rates are positive.
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