Question

The graph shows the calling charges of two cell phone companies. At how many minutes do the two companies charge the same amount?у2018cell phonecompany A161412Charges (dollars)1018cell phonecompany B6X708010 20 3040 50 60Time (minutes)A.0В.15C20D. 40

Answer 1

The two phone companies charge the same amount in the line intersection. That is, when x=20

Answer: 20 minutes