Answer:
Answer= 8
Step-by-step explanation:
step1: find f(-1) by subbing -1 for x in the equation f(x)=-2x+7.
f(-1)= (-2×-1)+7
= 2+7 = 9
step2: find f(4) by subbing 4 for x in the same equation before.
f(4)= (-2×4)+7
= -8+7 = -1
step3:add both previous answers to get the final solution.
f(-1)+f(4)
= 9 + (-1)
= 8
