For Spring Break, the Alpha Plus staff is planning a team building trip in
Tahlequah, Oklahoma. On one day, they plan to float down the Illinois River.
Fannie's Floatables charges a $55 reservation fee and $12.50 per raft. Ricky's
River Rats charges a $30 reservation fee and $15 per raft. Write a function to show
the cost of each business. For what number of rafts would the cost be the same?