Question

let $y$ be the number of years it will take the stalactite to grow 5 inches.
write a multiplication equation to describe the situation.
$\frac{1}{200}$ $y$ $5$ $cdot$ $=$
the total amount the stalactite grows is $\frac{1}{200}$ inch times the number of years. that growth must equal 5 inches.

Explanation:

Step1: Define growth per year

The stalactite grows $\frac{1}{200}$ inch per year.

Step2: Set up total growth equation

Total growth = growth per year × years, so $\frac{1}{200} \cdot y = 5$.

Answer:

$\boldsymbol{\frac{1}{200} \cdot y = 5}$