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Hannah pays $39 per month for her cellular phone which includes 1 hour of use.
After the first hour, she pays 20% per minute. How much will her monthly bill be
if she uses her phone 2.5 hours?

Respuesta :

Answer:

$57

Step-by-step explanation:

1h = $39

so the first hour costs $39

2.5h -1h =1.5h=90mins

0.20x90=18

so 1h30mins after the initial 1h cost $18

so all together it costs $18+$39= $57