Answer:
r=0
Step-by-step explanation:
1) Place point (2, 3) on graph.
2) Use the slope of -1 to go left -1 and go down -1
3) Until you get to x value of -1
Let me you divide them if there equal numbers I guess
Nonmembers: $10 per hour = 10h
Members: $300 and $4 per hour = 300 + 4h
10h > 300 + 4h
6h > 300
h > 50
You'd need to use it for more than 50 hours.