Jan is having the walls of her house painted. The cost depends on the area of the walls.

Which is the dependent variable, and which is the independent variable?

A. The dependent variable is the cost, and the independent variable

is the area of the walls.

B. The dependent variable is the cost, and the independent variable is

the number of floors.

C. The dependent variable is the area of the walls, and the

independent variable is the cost.

D. The dependent variable is the number of floors, and the

independent variable is the cost.

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.

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.

a c

step-by-step explanation: