Abigail has $30.00 to buy groceries. She needs to buy some apples, some bananas, and 3 pounds of potatoes. Fuji apples are $1.97 a pound, Bananas are $.36 each, and potatoes are $2.99 for a 3 pound bag. If a represents the number of pounds of apples Abigail buys and B represents the number of bananas she buys, which expression represents the amount of change she receives after her purchase 30.00-a-b
1.79a+0.36b+2.99
30.00-(1.79a+0.36b+2.99)
30.00+(1.79a+0.36b+2.99)