Question

Dada a função F:IR definida por F(x)=2x+5,calcule
A- F(-2)
B- F(-4)
C- F(3)
D- (5)

Answer 1

F(x) = 2x + 5

A) F(-2) = 2*(-2) + 5

F(-2) = -4 + 5

F(-2) = 1

B) F(-4) = 2*(-4) + 5

F(-4) = -8 + 5

F(-4) = -3

C) F(3) = 2*(3) + 5

F(3) = 6 + 5

F(3) = 11

D) F(5) = 2*5 + 5

F(5) = 10 + 5

F(5) = 15