One phone company charges a flat fee of $35, plus $0.15 for each minute. The other phone company charges a flat fee of $20, plus $0.25 for each minute.
Which equation can be used to solve for the number of minutes, m, for which the companies charge the same amount?
15m + 35 = 25m + 20
0.15m + 35 = 0.25m + 20
0.15m + 0.25m = 20 + 35
0.15 + 35m = 0.25 + 20m
The correct equation to use for finding the number of minutes, ( m ), for which the two companies charge the same amount is:
0.15m + 35 = 0.25m + 20
Explanation: This equation represents the total cost from each company. The first company charges $35 plus $0.15 for each minute (( 0.15m + 35 )), and the second company charges $20 plus $0.25 for each minute (( 0.25m + 20 )). Setting these two expressions equal helps solve for ( m ), showing the point where the costs are the same.
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