One math problem. Please solve

>>121284
>(4.8 MB, 5312x2988)
yeah nah learn how to take a screenshot faggot then we'll help

It's you again?

>>121284
It's 4, just like the amount of MB this picture killed of my data plan.

this thread made my day. A post like this >>121284 , complete with a failure for a picture, and a failure of a question. I laughed. I cried. I died

File: keks.png (533KB, 459x612px) Image search: [Google] [Yandex] [Bing]

533KB, 459x612px

>>121284
OP. are you in the ninth grade?

File: thisisafool.png (160KB, 500x370px) Image search: [Google] [Yandex] [Bing]

160KB, 500x370px

someone screencap this. This is stupidity. OP is a youngfag.

x=3 lies in the domain x>=1, thus substitute x=3 into f(x) = x+1
->f(3) = 3 + 1
->f(3) = 4

>>121427
he didn't deserve an answer.

>>121533
This.

Are you fucking retarded, the answer is right there