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Mathematics, 14.04.2020 18:29 kaitlyn215

PLEASE HELP ME WILL MARK BRAINLIEST!
An icicle drips at a rate that can be represented by the function f(x) = −x2 + 8x − 7, where 0 ≤ x ≤ 10 and x is the number of hours after the sun has risen. When f(x) is a negative number, the icicle is not dripping. Determine the values when the icicle starts and stops dripping.

A. x = −1 and x = 7
B. x = 1 and x = 7
C. x = 1 and x = −7
D. x = −1 and x = −7

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