The graph shows the price, in dollars, of different numbers of sweet breads at alan's store. the table shows the price, in dollars, of different numbers of shortcakes at the same store. a graph shows number of sweet breads on x-axis and price of sweet breads on y-axis. the x-axis scale is shown from 0 to 30 at increments of 5 and the y-axis scale is shown from 0 to 160 at increments of 20. a straight line joins the ordered pairs 5, 20 and 10, 40 and 15, 60 and 20, 80 and 25, 100 and 30, 120. shortcake number of shortcake price of shortcake (dollars) 5 45 10 90 15 135 20 180 how many dollars more is the price of a shortcake than the price of a sweet bread at david's store? $4 $5 $9 $25

5

Step-by-step explanation:

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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.

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.