A customer pays $21.00 for a $14.96 bill. Find the least amount of bills and coins to give change

A customer pays $21.00 for a $14.96 bill. Find the least amount of bills and coins to give change

Change = $21 - $14.96
Change = $6.04

Using bills first, we can use:
$5
$1

This gives us $6

We have:
$6.04 - $6 = 0.04
We can use 4 pennies to cover this

Total bills and coins:
1 - $5
1 - $1
4 pennies