A box of 21 holiday cards sell for $3.99 what is the unit price per card

(hurry! ) which expression is equivalent to the following complex fraction?

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

Write a story that matches with the expression 42x-5 pls hurry