Answer:
An expression that represents how much money gary will have left over after the purchase = (10x + 7) - 2y
Explanation:
The number of dollars owned by Gary = 10 x + 7
Gary decides to buy two pairs of jeans.
Let the cost of one pair of jeans be y
Cost of two pairs of jeans be represented as 2 y.
An expression that represents how much money gary will have left over after the purchase = (10 x + 7) - 2 y