Initially, the jar has $28, which is equivalent to 28 * 4 = 112 quarters (because each dollar is made up of 4 quarters).
Let
The new amount of quarters in the jar after both contributions would be:
To convert this back into dollars, we divide by 4 (since there are 4 quarters in a dollar):
Now, adding this to the initial $28, the total amount of money in the jar now,
Thus, the expression that represents the amount of money in the jar now is: