If f(x) = 6x—3, what is the value of f(1)+f(2)?

1 Answer
Nov 11, 2015

f(1) + f(2) = 12.

Explanation:

To get to this answer we have to substitute x in f(x)by 1 and then by 2. How? Let's see:

f(x) = 6x - 3. So,
f(1) = 6(1) - 3 = 6 - 3 = 3,
f(1) = 3.
f(2) = 6(2) - 3 = 12 - 3 = 9,
f(2) = 9.

So, f(1) + f(2) = 3 + 9 = 12,
f(1) + f(2) = 12.

Hope it Helps! :D .