A wireless phone plan cost Eric $35 for a month of service during which he sent 450 text messages. If he was charged an fixed fee of $12.50, how much did he pay per text.

Answer:
$.05 per message
Step-by-step explanation:
450m + 12.5 = 35
450m = 35-12.5
450m = 22.5 divide both sides by 450
m=22.5/450
m=.05