If the interest rate is 3 percent, the present value of $900 received at the end of four years is:

An intertemporal budget constraint ________

A) describes how much time an individual consumer has to spend their disposable net national product B) is independent of the real interest rate and wealth of the household C) divides consumption spending into three categories: spending on durables, non-durables and services D) describes how much a person can consume today versus tomorrow

What two factors are the keys to determining labor productivity?

A) the business cycle and the growth rate of real GDP B) the growth rate of real GDP and the interest rate C) the level of technology and the quantity of capital per hour worked D) the average level of education of the workforce and the price level