Question

1) dada a função f(x )= 2x + 5, calcule

A) x = 3

B) x = -2

C) x = 0

D) F(x) = -3

E) F(x) = 7

Answer 1

A) f(x)= 2.3+5
f(x)= 6+5
f(x)= 11

B) f(x)=2.-2+5
f(x)=-4+5
f(x)= 1

C) f(x)=2.0+5
f(x)=0+5
f(x)=5

D) f(-3)= 2.(-3)+5
f(-3)= -6+5
f(-3)= -1

E)f(7)= 2.7+5
f(7)= 14+5
f(7)= 19