Let the amount be $x then
8x + 13 = 7.5x + 16
0.5x = 3
x = 3/0.5 = 6 shirts answer
It should be B. 15.
I think ..
I believe the correct answer is B. Hopefully my answer is useful!
Please mark as brainliest as well, thanks!
5 is the slope and 3 is the y-intercept