Let f(t) = 10t - 6t2. a) Find f(t + h): b) Find f(t + h) - f(t): c) Find f(tth)-f(t) . h d) Find f'(t):Let f(x) = -3x2. a) Find f(x + h): b) Find f(x + h) - f(x): c) Find f(ath)-f(x) . h d) Find f'(x): (-6x)\fLet f(ac) = Vac + 4. a Find f(x + h): b) Find f(a t h) - f(x): c Find f(ath) -f(ac) . h d) Find f'(x)