Respuesta :

f(x)=-8x+7

f(-2)=-8(-2)+7                              f(4)= -8(4)+7

f(-2)= 16+7                                  f(4)= -32+7

f(-2)=23                                       f(4)= -25

elida20
f(x)=7-8x, f(2)=24
f(x)=7-8x, f(4)=-25