someone help

Question

A sales representative at an electronics outlet mall receives sales commissions of 3% on tablets, 6% on laptops, and 9% on televisions. In April, if he sold five tablets that cost $390 each, nine laptops that cost $570 each, and three televisions that cost $950 each, calculate his total sales commission earned for the month.

Answer 1

c represents his commission

c = 0.03(5)(390) + 0.06(9)(570) + 0.09(3)(950)

 

Can you calculate?