Question

A submarine is diving from the surface of the water at a rate of 80 feet per minute which integer represents the depth of the submarine after 7 minute

Answer 1

$\frac{80\ ft}{1\ min}=\frac{x\ ft}{7\ min}\ \ \ \ |cross\ multiply\\\\1\cdot x=80\cdot7\\\\\boxed{x=560\ (ft)}\leftarrow answer$

Answer 2

x=560

kisses I hope help you