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)
10 months ago

Answer 1

Part A: Rearrange the distance formula.
The idea we are going to use here is that equations can be rearranged the same way
15 = 3x5
can be rewritten as 15 \(\div\) 5 = 3
both of the equations I just wrote are true statements

So if we have D = R*T
and rearrange it in the same manner:
D \(\div\) T = R
or
R = D \(\div\) T is what we get

Answer 2

Part B: Find the dolphin's rate in feet per hour.

This means we are going to use the formula we just got from Part A and plug in the given values.

If the formula is R = D \(\div\) T
while D = 665280
and T = 3

Your answer for part B is looking for
what is 665280 \(\div\) 3 = ?

Answer 3

Part C: Dolphin's rate in miles per hour

In this case you want to consider that there are 5280 feet in 1 mile.
This means you should do: (answer from Part B) divided by 5280 = ?

Answer 4

If you are lost or still stuck, come back and comment on this post to let me know!