It would be a variable because it doesn't tell us how much he made. So put a random letter, I would use X.
F(x) = x^2 - 3x - 7
f(-3) = (-3)^ 2 - 3(-3) - 7
f(-3) = 9 + 9 - 7
f(-3) = 18 - 7
f(-3) = 11
Answer:
2
Step-by-step explanation:
add 5 to 13 then divide 9 by that number and that is what x equals
Answer:
356/7
Step-by-step explanation:
