Answer:
1. 2.25
2. 4.50
3. 11.00
Explanation:
1.nickel is 5 cent so 45*5 = 225 cents but cents is 1/100 of a dollar so make it 2.25
2. quarter is 25 cent so 25*18=450 cents but cents is 1/100 of a dollar so make it 4.50
3. 22 half dollars is 22 fifty cents so thats 11.00