Answer: The rate of change for the scenario described is $150 per week.
Explanation:
Given: Kenny has $1,400 in the bank.
He earns $150 every week at his after school job.
The rate of change is described by the change in dependent variable with respect to change in the independent variable.
In the given situation the the money he earns is dependent variable on time in weeks , where time is an independent variable.
Thus, his money increased by $150 per week.