Abigail has $30.00 to buy groceries. She needs to buy some apples, some bananas, and 3 pounds of potatoes. Fuji apples are $1.79 a pound, bananas are $0.36 each, and potatoes are $2.99 for a 3 lb. 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 purchases?
Answer
A
30.00 – a – b
B
1.79a + 0.36b + 2.99
C
30.00 – (1.79a + 0.36b + 2.99)
D
30.00 + (1.79a + 0.36b + 2.99)
Explanation
The apples cost $1.79a, and the bananas cost $0.36b. The 3-pound bag of potatoes costs $2.99, so the total purchase cost is 1.79a + 0.36b + 2.99. Subtract that total from Abigail’s $30.00 to find her change, giving 30.00 – (1.79a + 0.36b + 2.99), choice C.
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