Solve 9. Ben has 69 planks that are of standard size. He would need 5 such planks to make a bookshelf. Find the maximum number of bookshelves Ben can make.

plz answer​

13

round off because the remaining can't be made into bookshelves

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)