Question

Alaina gained m dollars in the stock market two weeks ago. Last week, she gained twice as much. This week, she lost $50 more than she gained the first week. How do you write an algebraic expression for her total gain or loss?

Answer 1

`G_(t3w)=2m-$50`
(where `G_(t3w)` is total gain over three weeks)

Explanation:

`G_(t1w)=m`

`G_(t2w)=m+2m`

`G_(t3w)=m+2m-(m+$50)`
`G_(t3w)=m+2m-m-$50)`
`G_(t3w)=2m-$50`