Evaluate the definite integrals using properties of the definite integral and the fact that 7 7 f (x) dx = 12, and / g(x) dx =5. 2 f(x) dx = -2, 3 3 (a) 8f (x) dx = 20f 2 7 (b) f (x) dx = 9f(x ) 2 (c) (f(x) - g(x)) dx = Number 13 7 (d) (4f (x) +5g (x)) dx = Number