Define the problem. State your hypothesis.
Describe the experiment you would set up and the data you would collect.
Write a paragraph or two that describe your results and state the conclusion you can draw from these results.

So basically it's like a science project. Try to figure out the problem, it doesn't matter if your right or wrong because that's what a hypothesis is. The basic idea of an hypothesis is that there is no pre-determined outcome. After all of that the rest should be easy as long as you solve and know your hypothesis.

Explanation:

the cost of attendance or coa is an approximate budget for the cost of attendance of the whole academic year. in order to calculate this, universities take into consideration many factors like room and board, tuitions and fees, books, transportation and personal expenses such as medicine, laundry, clothing. all these factors combined make up the final sum to the cost of attendance in each university.

now you can make him brainleist.