Lola is a software saleswoman. her base salary is $1900, and she makes about $40 for every copy of hostory is fun she sells.

let p represent her total pay (in dollars), and let n represent the number of copies of history is fun she sells. write an equation relating p to n. then use this equation to find her total pay if she sells 24 copies of history is fun.

Since her base salary is $1900, the money she makes by selling copies of History is Fun gets multiplied by $40 and that gets added to her base salary. 
So the equation would be = P+40N
Since she sells 24 copies, her total pay would be = 1900+(40*24) 
                                                                                    = 1900 + 960
                                                                                    = $2860