can you answer please

This assignment contains problems on Chapter 6 , and 7. Please answer all problems and questions completely, Problem 1 and 2 are about Chapter 6, and Problem 3 is about Chapter 7. You should provide detalled solutions which show clearly how your final answer is obtained. Just providing a number as answer to a problem will not earn you any point even though that number is correct. If you write your solutions step by step with details (such as from the equations used until obtaining the final number), even if your final answer is not correct, you would get some points if some of your prior steps are conect. Problem1 (20 point). The following are the monthly rates of retum for Madison Cookics and for Spphine Electric during a six-month period