Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

a: What economic quantity is measured by the length of the dashed line? b: What

ID: 1257353 • Letter: A

Question

a: What economic quantity is measured by the length of the dashed line?

b: What is the discount rate in this model? [hint, it is positive]

c: What would happen to period one consumption if the discount rate doubled

d: What would happen to period one consumption if the discount rate were multiplied by negative one. [that is, if it changed sign to be negative]

e: This diagram is written in present value terms, where the present is Period 1. Would the solution change if it were written in Period 2 dollars? Why or why not?

Marginal Net Benefits in Period 1 (dollars per unit) Marginal Net Benefits in Period 2 (dollars per unit) Present Value of Marginal Net Benefits in Period 1 6 5.45 Present Value of Marginal Net Benefits in Period 2 2 Quantity in Period 1 01 2 3 4 5 67 89 10 11 12 13 14 15 16 17 18 19 20 20 19 18 17 16 1514 13 12 11 10 9 8 7 6 5 4 3 21 0 Quantity in Period 2

Explanation / Answer

a: What economic quantity is measured by the length of the dashed line?

marginal benefits

b: What is the discount rate in this model? [hint, it is positive]

cost of extraction

c: What would happen to period one consumption if the discount rate doubled

it would be broken

d: What would happen to period one consumption if the discount rate were multiplied by negative one. [that is, if it changed sign to be negative]

the graph will change

e: This diagram is written in present value terms, where the present is Period 1. Would the solution change if it were written in Period 2 dollars? Why or why not?