a. Using the starting point formula, what is the price elasticity of demand for going from a price of $160 per unit to a price of $140 per unit

Price Elasticity of Demand is -4

Explanation:

We can see the graph and easily calculate the Q1 which is 120 units at P1 $140 and Q2 which is 80 units at P2 $160 price.

The starting point formula for calculating price elasticity of demand is given as under:

Price Elasticity of Demand = (ΔQ / Q2)  /  (ΔP / P2)

Here

ΔQ = Q1 - Q2 = 120 - 80 = 40 units

ΔP = P1  -  P2 = 140 - 160 =   - $20

By putting value in the above equation, we have:

Price Elasticity of Demand = (40 Units / 80 Units)  /  (-$20 / $160)

Price Elasticity of Demand = -4

i'm pretty sure the answer is 60.

being born in poverty would limit the people's chances, opportunities and benefits.

this happen because of several things, such as:

- poor people tend to gain less access to good education and nutrition. this mean that their chance to obtain high paying jobs would also be limited.

- poor people tend to socialize with other poor people while the rich tend to socialize with other rich people. this means that simply throguh their social circle, rich people would have more business opportunities compared to the poor people.

- rich people tend to have more capital in their disposal. this would benefit them in business since it is far easier for them to fund their business operation compared to poor people.