Problema Solution
The width of a rectangle is the sum of the length and 3. The area of the rectangle is 28 units. What is the length, in units, of the rectangle?
Answer provided by our tutors
Let
x = length, x>=0
x + 3 = width
Area = 28 units
Since Area = width*length we have:
x(x + 3) = 28
........
click here to see the equation solved for x
........
x = 4 units
The length of the rectangle is 4 units.