
each shirt costs $6

The percent markup is about 66.7%
The answer is 2.6 because 2.6+2=4.6
First one and the last one are rational. And the other two of them are irrational.
Answer:
Step-by-step explanation:
Try and become familiar with a program like Desmos. It will do wonderful things for you.
I have graphed
Red: y = -2x + 5 (The 5 is the y intercept. For this question it could be anything.
Blue: y = - 4x + 5 Same note as above.