Dada a função f(x) = 2 x + 3 , determine A) f(x)=0 Dada a funão f (x) = - 2x + 3 , determine f(1)

A) f(x) = 0 f(x) = 2x + 3 0 = 2x + 3 2x = - 3 x = -3/2 B) f(1) f(x) = -2x + 3 f(1)= -2.(1) + 3 f(1) = -2 + 3 f(1) = 1