17. DETAILS LARAPCALC10 1.4.029. Evaluating a Function Evaluate the difference quotient and simplify the result. See Example 4. f (x) = x2 - 7x +9 f ( x + Ax ) - f( x ) Ax AX # 018 DETAILS LARAPCALC10 1.4.035. g ( x ) Find f(x) + g(x), f(x) - g(x), f(x) . g(x), , f(g(x)), and g(f(x)), if defined. See Example 5. (If an answer is undefined, enter UNDEFINED.) f(x) = 3x- 9 g (x) = 6 - 4x (a) f(x) + g(x) (b) f(x) - g(x) ( c ) f ( x ) . g ( x ) (d) f ( x ) g ( x ) (e ) fig ( x ) ) (f ) 9 (f ( x ) )23 DETAILS LARAPCALC10 1.5.060. Use the graph to find the limit (if it exists). (If an answer does not exist, enter DNE.) y = f (x) X (-14, -14) (a) lim f(x) X - -14+ (b) lim f(x) -14 (c) lim f ( x ) X - -14