Question

it takes a submarine 30 seconds to dive 225 feet, moving at a constant speed. the captain wants to know the rate at which the submarine dives.
at what rate does the submarine dive?
$square$ feet per second

Explanation:

Step1: Define speed formula

Speed = $\frac{\text{Distance}}{\text{Time}}$

Step2: Substitute given values

Speed = $\frac{225}{30}$

Step3: Calculate the rate

Speed = $7.5$

Answer:

7.5 feet per second