Pleasee help meee I begg You I did half of it

What is the average rate of change for this function for the interval from x=2 to x=4 ?

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.