As the price of tomatoes fell from $2.5 to $2, the quantity imported from mexico fell from 1,800 tons to 900 tons. the elasticity of supply of tomatoes imported from mexico is: 0.25.

The elasticity of supply can be calculated using the formula:

Elasticity = [(Q2 – Q1) / ((Q2 + Q1) / 2)] / [(P2 – P1) / ((P2 + P1) / 2)]

or in simpler terms: Elasticity =(ΔQ / Qave) / (ΔP / Pave)

Where Q and P are the quantity and price respectively

We are given that:

P1 = $2.5                 Q1 = 1,800 tons

P2 = $2                    Q2 = 900 tons

Substituting the given values into the equation:

Elasticity = [(900 – 1800) / ((900 + 1800) / 2)] / [(2 – 2.5) / ((2 + 2.5) / 2)]

Elasticity = (-900 / 1350) / (-0.5 / 2.25)

Elasticity = 3.0

Since elasticity is positive, the supply is directly proportional to the price.

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.