Marshall is comparing different companies that rent sound systems. The total cost, y, for each company includes a fixed rental sound system is rented. Information about the cost for each company is shown below.
Company A
Total Cost and Number of Hours
200
180
Company B
160
y
0 50
2 90
140
120
4 130
Total Cost (in dollars)
100
6 170
80
60
40
Company C
y = 10x +90
20
10
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