You rent 4 DVDs and 1 video game for $33. The following week, your friend rents 8 DVDs and 2 video games for $66. Which of the following statements apply? A. The system of linear equations that represents this situation has infinitely many solutions.

B. The system of linear equations that represents this situation has one solution.

C. The system of linear equations that represents this situation has no solution.

D. The DVD rentals cost more than video game rentals.

E. You cannot determine the costs of DVD or video game rentals.

F. The video game rentals cost more than DVD rentals.

e, a, d

Step-by-step explanation:

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.