Answer:
21x-28
Step-by-step explanation:
Distribute
7(3x-4)
7*3x=21x
7*-4=-28
Using the relation between velocity, distance and time, it is found that:
- The speed of the wind is of 2 mph.
- The speed of the broom is of 14 mph.
<h3>What is the relation between velocity, distance and time?</h3>
Velocity is <u>distance divided by time</u>, hence:

Flying with the wind, in which
the 48-mile trip took 3 hours, hence:



Her flight home against the wind took 4 fours, hence:



Adding the two equations:



Hence:
- The speed of the wind is of 2 mph.
- The speed of the broom is of 14 mph.
More can be learned about the relation between velocity, distance and time at brainly.com/question/24316569
Answer:
80
Step-by-step explanation:
add 60 plus 4o then subtracted from 180
2 to the second power times 7 to the seventh power