Adding and Subtracting Expressions Answers

Gabriel is at the grocery store, and wants to figure out his total cost before he gets to the register. He bought 2.5 pounds of apples that are x dollars a pound and 2 bags of lettuce for y dollars each. Which expressions would represent his total cost? Check all that apply.

Check all that you included in your response.

Gabriel remembers he has a coupon for $2 off his bill. Which expression gives the new amount he will pay?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. His sister states that the expression should be x + x + 0.5x + y + y – 2. Who is correct? Explain.

Gabriel has $30 to pay for the groceries. What simplified expression would represent the amount of change he should receive?

Gabriel used the expression 2.5x + 2y – 2 to represent his total cost, and 28 – 2.5x – 2y to represent the amount of change he should receive from $30. What was Gabriel’s error?

One week, Gabriel bought 2 bags of beans and 3 bags of rice. The next week, he bought 4 bags of beans and 1 bag of rice. Let b represent the cost of each bag of beans and r represent the cost of each bag of rice. Simplify the expression for the total cost, shown below.(2b + 3r) + (4b+ r)

What is this expression after simplifying?

Check all that you included in your response.

Which did you consider in your response? Check all that apply.