ILL GIVE BRAINLIEST PLEASE HELP explain in detail the steps you would take to find these values. If you are able to find any values. 150 words
x^2+3x-4/x^2+7x+12 + x^2+[]x+[]/x^2+[]x+[] = x+1/x+3

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Areal estate agent earns $32,000 a year plus $1,000 for each apartment he sells. write an equation that shows the relationship between the number of apartments abe sells, n, and the total amount he earns in a year, e. what is the total amount abe would earn from selling 10 apartments in one year