The aggregate demand is described graphically as
a. sloping downward.
b. a vertical line

Prove that the total cost curve and the total variable cost curve have the same slope

What will be an ideal response?

To study a macroeconomy, we calculate aggregate quantities in real terms because

A) we want to get rid of the illusion of price effects. B) we want to concentrate on the production of real goods, as opposed to services. C) it is then easier to take logarithms. D) it is the only way to reconcile the three approaches to measuring GDP.