It can be written in a scientific notation.
670,000,000 + 700,000,000
6.7 E^8 + 7 E^8
13.7 E^8
1.37 E^9
z(6x+2xy+3y) thats has to be it
Answer:
The volume is increasing at a rate of 1508 cubic millimeters per second when the diameter is 60 mm.
Step-by-step explanation:
Volume of a sphere:
The volume of a sphere is given by the following equation:

In which r is the radius.
Implicit derivatives:
This question is solving by implicit derivatives. We derivate V and r, implicitly as function of t. So

The radius of a sphere is increasing at a rate of 4 mm/s.
This means that 
How fast is the volume increasing (in mm^3/s) when the diameter is 60 mm?
This is
when
. So



The volume is increasing at a rate of 1508 cubic millimeters per second when the diameter is 60 mm.
If you look up distributive property online, there will be really good videos to help you remember. Hope that will help you:)