1) what is the slope and what is the meaning of that slope 2) what is the Y-intercept and what does it mean
4)what is x-intercept and what does it mean
5) what is profit for selling 100 lunches
6) how many lunches sold if profit is $600

The $3 per sale (3s) has to be added to the weekly pay ($100) AND has to be greater than or equal to (≥) $160. The only option that is valid is D) 100 + 3s ≥ 160.

Let's solve for s:

100 + 3s ≥ 160
subtract 100 from both sides

3s ≥ 60
divide both sides by 3

s ≥ 20

ANSWER: D) 100 + 3s ≥ 160; s ≥ 20

Hope this helps! :)