Mathematics, 14.12.2019 21:31 nolangriffin

Calls from a call box are charged per minute at one rate for the five minutes, then a different rate for each additional minute. if a 7-minute call costs $4.25 and a 12-minute call costs $5.50, find each rate.
a.$ 1.50 per minute at one rate for the first 5 minutes and $0.50 per minute thereafter
b.$3.20 per minute at one rate for the first 5 minutes and $0.55 per minute thereafter
c.$0.75 per minute at one rate for the first 5 minutes and $0.25 per minute thereafter
d.$2.40 per minute at one rate for the first 5 minutes and $0.75 per minute thereafter
which answer is it

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