Answer:
See below
Explanation:
we have f(x) = 8x + 29
essentially f(x) is a function and the number that goes in the blank is the input, whatever the input is you plug in to all values of x and evaluate to get the output
we are going to assume that we have to solve for f(4)
so we have f(4) = 8x + 29
because 4 is in the "input spot" we input a 4 for every x we see in the function
So we get f(4) = 8(4) + 29
we then simply evaluate
f(4) = 8(4) + 29
==> multiply 8 and 4
f(4) = 32 + 29
==> add 32 and 29
f(4) = 61
So if the input of f(x) was 4, the out put would be 61
Let me know if you have any further questions! :)