Find amount used:
Amount in the card = $20
Amount left = $13.28
Amount used = $20 - $13.28 = $6.72
Find duration of the call:
24 cents = 1 min
672 cents = 1/24 x 672 = 28 mins
Answer: The call was 28 minutes long.
Answer:
9586.232772
$4000×1.06( to the power of 15)=9586.232772
Answer:3,4,5,6
Step-by-step explanation: