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.
4.5xy
x 1.5x 2y
2y 2.5x
x – 1.5x
2.5y

Question

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.
4.5xy
x   1.5x  2y
2y   2.5x
x – 1.5x
2.5y

Mercury · Answer

some of the formatting was lost, so I will re-post the answer choices:

4.5xy

x + 1.5x+ 2y

2y + 2.5x

x – 1.5x

2.5y

Mercury · Answer

in general, if you buy (a) items at (b) price, the total cost of those items is a*b

applying this logic to the problem, if he bought 2.5 pounds of apples at x dollars a pound, he spent 2.5x on apples

repeat this logic with the lettuce

now, add the two quantities together to get the total cost

your result should be one of the answer choices. but you're not done yet - there's one more answer choice that is mathematically equivalent, so go through the other choices and see which one it is. at the end you should have 2 choices picked.