Answer:
The definition of a control experiment is a test where the person conducting the test only changes one variable at a time in order to isolate the results. An experiment where all subjects involved in the experiment are treated exactly the same except for one deviation is an example of a control experiment.
Step-by-step explanation:
200 dollars is equivalent to 40%
So what is 100% equivalent to;
Rent payment=
= 500 dollars
The answer is zero, i think
The answer is D. 2x - 4/x^2- 4