Answer:
7 more pennies.
Explanation:
Quarters are .25 each and you have 2 so that is .50.
Dimes are .10 each and you have 12 so that is 1.20
Pennies are .01 each and you have 23 so that is .23.
Added together and you get 1.93. So all you need is 7 pennies to get 2 dollars.