exam Maths Puzzle Numerical Ability

please use foil to find each product (2x-5y)(x+y) the university of phoenix elementary and intermediate algebra

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exam Other Question

How do you work this problem? Sam stuffs shrimp in his job as a seafood chef. He can stuff 1,150 shrimp in 7 hours. When his sister helps him, they can stuff 1,150 shrimp in 4.5 hours. If Sam gets sick, how long will it take his sister to stuff 575 shrimp?