Question

The cost of a long distance telephone call is determined by a flat fee for the first 5 minuets and a fixed amount for an additional minute. If a 15 minute call costs $3.25 and a 23 minute call costs $5.17 find the cost of a 30 minute call

Answer 1

Set up a system of equations
x + 10y = 3.25
x + 18y = 5.17
where x represents the flat fee and y is the cost per minute after 5 minutes

Answer 2

thanks ill try that now

Answer 3

im not really sure what to do :/