diketahui rumus fungsi f(x)=2x-3.nilai f(-2b+4)adalah...?

f(-2+4)=2(-2b+4)-3
= - 4b+8-3
= - 4b+5

f(x) = 2x-3
f(b) = 2b-3
f(-2b+4) = 2(-2b+4)-3
= -4b+8-3
= -4b+5

semoga benar ya.
maaf kalo salah