Select the situation below that models the following equation: A. Gunner wants to see a movie that costs $8.00. He sees the movie with three of his friends. How many times did he see the movie?

B. At the football game, Tyrice gained eight yards on one play and then lost three yards on the next play. How many total yards did he gain or lose over those two plays?

C. A diver who was in the water wanted to see a school of colorful fish below. She dove at a depth of three feet per second. If she started diving at sea level, what is her position after eight seconds?
D. The temperature outside dropped a total of three degrees in eight hours. What was the temperature after those eight hours?

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.