Answer:
2.00 = 0.25(2) +0.10(12) +0.01(23 +p)
Step-by-step explanation:
The number of pennies needed will be the number required to make up the difference between $2.00 and the change already found.
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Let p represent the number of pennies needed. Together with the change already found, we want the total to be $2.00.
2.00 = 0.25(2) +0.10(12) +0.01(23 +p) . . . . . equation for p
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7 pennies need to be found
