The divergence theorem applies since

is a closed surface. We have

where

is the space enclosed by the surface

. The divergence of the given vector field is

So we can write the volume integral (in spherical coordinates) as
Answer:
y = 25x - 85
Step-by-step explanation:
Every second (x) that passes by is 25 meters gained, and since she's 85 meters away from the safe distance still, the y intercept is -85.
Answer: I think distribute the 1/4
Step-by-step explanation:

Your equation should be 1.50x + 13 = 35.50
first, subtract 13 from both side leaving you with 1.50x = 22.50
now divide 1.50 from both sides
x = 15 (greatest number of rides)