7≤x≤10.

xx f, of, xf(x)
11 44
44 1313
77 2222
1010 3131
1313 4040

We are given that 7 ≤ x ≤ 10. Let's calculate the values of f(x) for the given values of x:

For x = 11, f(x) = 44
For x = 44, f(x) = 1313
For x = 77, f(x) = 2222
For x = 1010, f(x) = 3131
For x = 1313, f(x) = 4040