Question

Dada a função f(x) = -2x + 3, determine f(1) + f(4)

dada a função f(x) =4x +5, determine f(x)=7​

Answer 1

1) f (x)= -2x+3

f (1)= -2 (1)+3

f (1)= -2+3

f (1)= 1

f (4)= -2 (4)+3

f (4)= -8+3

f (4)= -5

f (1)+f (4)

1-5= -4

2) f (x)=4x+5

f (7)=4 (7)+5

f (7)=28+5

f(7)=33