What is the area of the regular pentagon with 5 inch sides and an apothem that measures 4.2 inches?

Bring the fraction a/a-4 to a denominator of 16-a^2

Factor the polynomial by its greatest common monomial factor.

The diameter of a bacteria colony that doubles every hour is represented by the graph below. what is the diameter of the bacteria after 8 hours? graph of a curve passing through the points zero comma 1, one comma two, two comma four, and three comma eight