Question

Which algebraic expression represents this phrase? the product of 86 and the depth of the river

Answer 1

If "d" is used to represent the depth of the river, that product will be
  86d

Answer 2

An algebraic expression is a mathematical phrase that contains numbers, variables (like x or y) and operators (like add,subtract,multiply, and divide).

We have to form the algebraic expression for the phrase

" The product of 86 and the depth of the river"

Let the depth of the river be 'd'

Therefore, the algebraic expression = Product of '86' and 'd'

= $86 \times d$

= 86d.

Therefore, the algebraic expression for the given phrase is "86d".