Answer:
9.5 minute
Step-by-step explanation:
500 - 25 = 50x
x = 
x = 9.5 minute
The answer would be 60 to 30% i hope this helps<33
The slope is 3
do you need the steps?
See attachment for one such shell. The volume is given by the sum of infinitely many thin shells like this, each with radius

and height determined by the vertical distance between the upper blue curve and the lower orange curve for any given

, i.e.

.
The volume is then
? -2 -1 0 1
-1-2=-3
The answer is -3