Hevesh wants to build a line of dominos 72 inches long , with each domino spaced 1 1/5 inches apart from front edge to front edge. How many dominos will she need?

62 dominos

Step-by-step explanation:

if you divide 72 by 1 1/5 ( 1.2) then you get 62.5. However, since you cannot have half of a domino in this equation you have 62.

the correct is answer is a 9-sided polygon!

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.