Answer:
Plan Q cost $18.9 and it is less expensive by $0.9
Step-by-step explanation:
Cost of Phone Q=$10+$0.14 per minute
Cost of phone R=$7+$0.17 per minute
Let m=number of minutes
If Anthony talks for 70 minutes
Cost of Q=$10+$0.14(m)
=$10+$0.14(70)
=$10+$9.8
=$19.8
Cost of phone R=$7+$0.17(m)
=$7+$0.17(70)
=$7+$11.9
=$18.9
Plan Q cost $18.9 and it is less expensive by $0.9
