Algebra
posted by Kaui on .
Find a polynominal for the perimeter and for the area. The demensions are:
Width:b+3, Length:b
The perimeter is:
The area is:
Do not factor.
Please help.

perimeter = 2 (b+3) + 2 b
= 2 b + 6 + 2 b
= 4 b + 6
area = (b+3)(b)
= b^2 + 3 b