Answer:
90 minutes
Step-by-step explanation:
If it takes 54 minutes to hike 3 miles, divide 54 by 3, = 18. So it takes him 18 minutes to hike 1 mile. Multiply 18 x 5 miles = 90 minutes. Hope this helps!
The expression is (42*7) + (14+22)
First find a parameterization for the curve of intersection.
Given the equation of a cylinder, a natural choice for a parameterization would be one utilizing cylindrical coordinates. Here,

which suggests we could use

with
, and we get
from the equation of the plane,

Now use the arc length formula:



36 liters
8 • 4 (8 liters for 4 cars)
2 • 2 (2 liters spilled for 2 sets of 2 cars)