It’s actually all except bottom left
speed of plane flying east = x
speed of plane flying west = x+75
total speed = 2x+75
distance after 4 hours ( 7-3) = 8x+300
8x+300 = 5460
8x = 5160
x = 5160/8 = 645
speed of plane flying east = 645 km/h
The answer is B, because if you graph the equations, the one that has the right maximum and distance is B. :)
Answer:
V = 640.8849
Step-by-step explanation:
Using the equation for the volume of a cone, all you have to do is plug in the given values of height (h) and radius (r)!

So you end up getting something looking like
