Answer :
Answer:
61
Step-by-step explanation:
hi! we can start off by plugging in the number 9 for x in the equation.
f(x)=8x-11)
f(9)= 8(9)-11
= 72-11
=61
hope this helps.
The answer is 61.
Replace the x in the equation with the nine. F(9) = 8(9) - 11
Now first multiply 8 x 9 which is 72
Now you have F(9) = 72 - 11
Subtract the two numbers.
F(9) = 61
Replace the x in the equation with the nine. F(9) = 8(9) - 11
Now first multiply 8 x 9 which is 72
Now you have F(9) = 72 - 11
Subtract the two numbers.
F(9) = 61