Chloe swam “n” number of laps to raise money for her school. Friend A donated $20.00 plus $1.25 for every lap Chloe swam.
Friend B donated $15.00 plus $2.50 for every lap Chloe swam.
Friend C donated $40.00 plus $1.50 for every lap Chloe swam.
Friend D donated $25.00 plus $1.75 for every lap Chloe swam.

Write a variable expression to represent how much the four friends donated altogether. Let, n, represent the number of laps Chloe swam.