For each function, what is the output of the given input?
For f(x) = 4x + 7, find f(4)
Please show work and give me an explanation. I am trying to study for my test with these practice problems. I'm not sure how to do this one. Please explain guys!! Will medal/fan as always.
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f(x) is similar to f(4) but instead of x you see 4
so instead of the input being x
the input is now 4
just replace the x's with 4's
in the following:
so you have
our input is with f(x) and whatever answer to the function that was given with f(x) would be the output...
in other words, if we have \[f(x) = 3x + 1 \] and we are said to find f(2), what we have to do is replace the x in the function with 2.
\[f(2) = 3(2) + 1 \]
\[3(2) + 1 = 6 + 1 = 7 \]
use that same principle with your problem, replace x with 4
\[\large f(4) = 4(4) + 7\]
find the sum of \[4(4) + 7 \] and that will be your output