Question

A dolphin swims 665,280 feet in 3 hours. Use the formula d = rt, where d represents distance, r represents rate, and t represents time, to answer the following questions. Show your work.
Part A: Rearrange the distance formula, d = rt, to solve for rate. (2 points)

Part B: Find the dolphin's rate in feet per hour. (3 points)

Part C: Find the dolphin's rate in miles per hour. (3 points)

Part D: Which unit, feet, or miles, makes more sense to use in this scenario, and why? (2 points)

Answer 1

Answer:

Here we need to use the relation:

Distance = rate×time

Where "rate" is the speed at which the dolphin moves.

To answer different questions.

A) Dividing both sides by "time" we can rearrange the above relation to get:

rate = distance/time

B) We know that the dolphin swims 665,280 feet in 3 hours, then:

distance =  665,280 feet

time = 3 hours

Then the rate is

C) Now we want to rewrite the equation in miles per hour.

To do it, we need to use the relation:

1 mi = 5280 ft

Then we can rewrite the rate as:

That one is the rate in miles per hour.

D) Which one makes more sense to use?

The second one is a way simpler number (to read and to use in other equations) so we should use the rate in miles per hour.

Hope this helps:)

Brainly plz.