Answer:
14.4
Step-by-step explanation:
f(x, y) = 4x + 7y - 6
substitute x=5 and y=-5
f(5,-5) = 4(5) + 7(-5) - 6
f(5,-5) =20-35-6
= -15-6
=-21
nine divided by 2 plus negative eight
9/2=4.5
4.5+(-8)= -3.5
the answer is 6 just check it
