Iam not really that good at math> .. 8/4 -1

Look at attachment. has all info needed. need

This is so hard and it’s for a test

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.