The answer I think is 5 because
Download SLADER and take a picture of the barcode at the bottom, on the app and you will have all the answers on the textbook.
Got it, that answer is 1 5/12
F(x)=-3.25x +22.41
f(-4.2)= 3.25(-4.2)+22.41 = 8.76
The correct answer would be D !m