Question

F(x)=20x+13, find f(3)

Answer 1

f(3)=73

Explanation:

So, when you see something like this, all you need to do is plug the number in for the variable.

In this case, plug 3 in for x.

f(3)=20(3)+13

20*3=60

60+13=73

f(3)=73