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Given the function f(x) = x+ 15x + 9x - 10 , complete the following. Enter INF for infinity or -INF for negative infinity. ANSWER

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Given the function f(x) = x+ 15x + 9x - 10 , complete the following. Enter INF for infinity or -INF for negative infinity. ANSWER PART A IN INTERVAL NOTATION. A) f(x) is concave upwards on the interval B) The point of inflection is (Answer as an ordered pair, (x,y) )

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