Answer:
f(x) = 25
x = 5
f(x) = 37
x = 7
Explanation:
To complete the function table, you need to plug in the numbers that they already give you into the equation.
For example, in the first row, you can find f(x) by plugging in the number given for x, which is 4:
f(x) = 6(4) + 1
f(x) = 24 + 1
f(x) = 25
For the second row, you plug in 31 for f(x):
31 = 6x + 1
-1 - 1
________
30 = 6x
5 = x
Just keep plugging in the given numbers, and if you are still confused, just ask.