Louis must ride a mechanical lift to place 20 boxes on a high store shelf.
. louis weighs 140 pounds.
. there are x boxes that weigh 10 kilograms each and 20-x boxes that weigh 30 kilograms each.
. a kilogram is 2.2 pounds.

which expression shows the total weight, in pounds, that will be on the lift?

a.) 1,320 - 44x
b.) 1,460 - 44x
c.) 272 - 9.1x
d.) 412 - 9.1x