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Find the difference quotient for the function and simplify it. [NOTE: Find (a + h) - f(a), h 3) f(x) = x2 + 7x Using COMPOSITIONS of functions to decide whether or not the functions are inverses of each other. 4 ) f ( x ) = 15x - 4, 9( x) = x3 +4 Form a polynomial f(x) with real coefficients having the given degree, zeros and constant. 6) Degree: 3; zeros: -2 and 3 + i; constant: 40. Find ALL zeros for the polynomial function AND factor the polynomial into linear factors. 7) f(x) = x3 - 9x2 + x - 9