The answers are boxed the rest of it is just the work in case you want to know how to do it.
Answer:

Step-by-step explanation:
Answer:
90 mph
Step-by-step explanation:
Against wind DATA:
distance = 600 miles ; time = 5 hrs. ; rate = 600/5 = 120 mph
With wind DATA:
distance = 600 miles ; time = 2 hrs ; rate = 600/2 = 300 mph
Equations:
p + w = 300
p - w = 120
2p = 420
p = 210 mph (speed of the plane in still air)
Since p+w = 300, w = 300-210 = 90 mph (speed of the wind)
There are 12 inches per foot. If the tree is 48 feet tall, it is 48 x 12 = 576 inches tall.