$3.00
1.  12 quarters
2.  300 pennies
3.  6 half dollars coins
4.  3 dollar coins
5.  30 dimes
6.  250 pennies and 1 half dollar
   
   $5.50
1.  11 half dollar coins
2.   5 dollar coins and 2 quarters
3.   550 pennies
4.   20 quarters and 1 half dollar coin
5.   22 quarters
6.   5 dollar coin and 1 half dollar coin
   
$3.75
1.   7 half dollar coins and 1 quarter
2.   375 pennies
3.   15 quarters
4.   300 pennies and 3 quarters
5.   3 dollar coins,7 dimes,and 1 nickle
6.   3 dollar coins and 13 nickles

   
$6.00

1.   600 pennies
2.   24 quarters
3.   9 half dollars
4.   550 pennies and 1 half dollar
5.   6 dollar coins
6.   60 dimes