Find a polynominal for the perimeter and for the area. The demensions are:

Question

Width:b+3, Length:b

The perimeter is:

The area is:

Do not factor.
Please help.

Answer 1

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

area = (b+3)(b)
= b^2 + 3 b