Question 1135476
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Let me answer n.n. a), b) and c) of your post.



            Why did you decide that the tutors will do YOUR JOB for you ?


            It is YOUR JOB to substitute the given values into the given formula and calculate.


            It is NOT the tutor's job, and never was.


            Than quicker you will get this idea, than sooner you will be on a right rail.



<H3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Making calculations is students' honor duty and a privilege !</H3>