Write the total amount then write the amount as a fraction and as a decimal in terms of dollars answer for 4 5 and six

4.
49 cents in total. 49/100 as a fraction. 0.49 as a decimal.

5.
85 cents in total. 85/100 or 17/20 as a fraction. 0.85 as a decimal.

6. If it's 7 nickels and 2 pennies then ...
37 cents in total. 37/100 as a fraction. 0.37 as a decimal.

Hope I didn't mess up for your sake

What are the following algebraic equations. you need to post those if you want the answer