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

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.