What's the algebraic expression for 'one half a number and 7'?

Not positive on how to find an algebraic expression. Could you explain this problem and how you got the answer you did? :/ Help?


IXL Word Problem

Sadie and Todd, the boy she was babysitting, were playing basketball together. Her score was 21 points, and his score was 19 points. Sadie wanted to make the game more fair, so she called a... more

Help with algebra, please!

A rectangle with an area of 240^2 has a length 10 inches shorter than 5 times it's width. Which expression could be used to solve for the length of the rectangle?

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