8. The equation y = 180 + 5x represents the amount a school club will pay a T-shirt company for custom T-shirts, where x represents the number of T-shirts purchased and y represents
the total cost in dollars. The equation y = 10x represents the club's income from selling the
T-shirts, where y represents the money earned in dollars and x represents the number of
T-shirts sold. The graph represents this situation.
YA
450
400
350
300
250
200
150
100
50
0
5
10 15 20 25 30 35 40 45 x
Assuming that the club members sell all the T-shirts they purchase, when will the club
make a profit?