X = -20p + 500
20p = 500 - x
p = (500 - x)/20
R = xp = x(500 - x)/20 = (500x - x^2)/20
Answer:
43.013
Step-by-step explanation:
Theres a nine in the thousands place it has to be 5 or higher to round so its high enough.
Answer:
60 miles per hour.
Step-by-step explanation:
Let r represent speed of wind blowing in miles per hour.
We have been given that the cruising speed of the plane was a constant 360 mph in air. The speed of the plane is the direction of wind would be
.
The speed of the plane is the opposite direction of wind would be
.

Distance covered in the direction of wind would be
.
Distance covered in the opposite direction of wind would be
.
Since both distances are same, so we will get:






Therefore, the wind is blowing at a rate of 60 miles per hour.