Cost of company A=monthlyfee+text=20+0.03t where t=number of texts A=20+0.03t
company b is monthlyfee+texts=5+0.07t B=5+0.07t
1. c=20+0.03t c=5+0.07t using c for cost is confusing because we can't tell which is for which company
2.
equal, means the costs are equal so 20+0.03t=5+0.07t minus 5 from both sides 15+0.03t=0.07t minus 0.03t from both sides 15=0.04t divide both sides by 0.04 375=t the answer is 375 texts
