Problema Solution
You are designing a rectangular birthday card for a friend. You want the card’s length to be 1 inch more than twice the card’s width. The area of the card is 88 in2. What are the dimensions of the card?
Answer provided by our tutors
let
l = the length of the card, l>0
w = the width of the card, w>0
the card’s length to be 1 inch more than twice the card’s width
l = 2w + 1
the area of the card is 88 in2
l*w = 88
plug l = 2w + 1 into the last equation
(2w + 1)*w = 88
by soling we find:
w = 6.39 in
click here to see the step by step solution of the quadratic equation
l = 6.39 + 1 = 7.39 in
the dimensions of the card are 6.39 in and 7.39 in.