PLEASE HELP ME YALL I dont know this and its already late its my next period please

Steps to solve:
f(x) = 6(1 - x) when x = -8
~Substitute
f(-8) = 6(1 - (-8))
~Simplify
f(-8) = 6(1 + 8)
~Add in parenthesis
f(-8) = 6(9)
~Multiply
f(-8) = 54
Best of Luck!
Answer:
54
Step-by-step explanation:
f(x)=6(1-x)
f(x)=6(1-(-8)
f(x)=6(7)
f(x)=54