F(x) = 7x+2 what's the value of f(7)

To answer this question, we need to first know what f(x) means. For example, if f(10), then you plug in 10 for x, 7(10)+2 = 72.
Do the same thing but with f(7).
f(7) = 7(7)+2
f(7) = 49+2
f(7) = 51
Hope this helps.

F(x) = 7x+2

( with functions, just put in the f value as x and solve )

7•7+2
49+2
51

f(7) = 51

hope this helps!