Answer: 10000
The correct answer is 10000.
Alyssa's average speed on the round trip is 540 Mies per hour.
We have given,
The speed of the jet Alyssa flew on from Boston to London was 480
mph.
On her return flight, the speed of the jet was 600 mph with a tail
wind.
<h3>What is the average speed?</h3>

a=inital speed
b=final speed
add 600 and 480 then divide by 2
That can be given by

Alyssa's average speed on the round trip is 540mph.
To learn more about the average speed visit:
brainly.com/question/4931057

First, replace

and

. Then you have

If we take

, then immediately we see a differential in the numerator in the form of

. So the integral becomes

and evaluates to

making (A) the correct answer.
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Answer is 30x^3y^7
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