I need help on this problem, and can you please show all work

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school