The weekly sales of Honolulu Red Oranges is given by q = 860 − 20p.
where q is the number of oranges sold at the price p dollars per orange. Find E(p)
E(p) =

Calculate the price elasticity of demand when the price is $38 per orange (yes, $38 per orange†). HINT [See Example 1.]

Interpret your answer.
The demand is going by % per 1% increase in price at that price level.

Use the elasticity to calculate the price that gives a maximum weekly revenue.
dollars per orange

Find this maximum revenue.
dollars of revenue

The formula for elasticity is -dQ/dP/(Q/P) (The - sign is the standard convention). Then, at $30 per orange, q = 990-22p=990-22(30)=990-660=330 dq/dp = -22 Thus, E = -(-22)/(330/30) = 22/11 = 2 Thus

Step-by-step explanation:

i don't know futhure this sorry

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.