SOLUTION: the cost of a long distance telephone call is 36 cents for the 1st minute and 21 cents for each additional minute or portion thereof. write an inequality representing the number of

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Question 87794: the cost of a long distance telephone call is 36 cents for the 1st minute and 21 cents for each additional minute or portion thereof. write an inequality representing the number of minutes a person could talk without exceeding $3.
the length of a rectangular playing field is 5 feet less than twice its width. if the perimeter of the playing field is 230 feet find the length and width of the field.

Answer by malakumar_kos@yahoo.com(315) About Me  (Show Source):
You can put this solution on YOUR website!

let the width of the rectangular field be=x
the length of the field=2x-5
perimeter of the field=230 ft i.e. p = 2l+2b=2(2x-5)+2x=4x-10+2x=6x-10
6x-10 = 230
6x=230+10=240 i.e. 6x=240 x=240/6=40
width = 40ft length=2.40-5=80-5=75ft
length = 75ft and width = 40ft