At the beginning of the semester students reported that they spend an average of 5 hours per day watching television, decreasing at an average rate of 30 minutes per week. professors reported that they spend an average of 1 hour per day watching television, increasing at an average rate of 30 minutes per week. (source: blitzer: thinking mathematically, 2019) a. write a function, s, for the amount of time students watch television during week, x. b. write a function, p, for the amount of time professors watch television during week, x. c. by which week do students and professors both watch the same number of hours of television? how many hours?

(a)

(b)

(c) At 4 weeks, when both will be seeing an average of 3 hours of TV.

Step-by-step explanation:

a) For the students, they start at X(0)=5 h and ΔX=-0.5 h/week.

We can write

b) For the professors, they start at X(0)=1 h and ΔX=+0.5 h/week.

We can write

c) The seew which they will be watching the same amount of hours will be the 4th week.

The amount of hours will be

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.