China has roughly how much of the world's population?

Refer to Table 22-4. In the table above, which countries are consistent with the predictions of the economic growth model?

A) Japan and Guatemala B) only Japan C) Botswana and Thailand D) all four countries

Suppose $X is the present value of $Y to be received next year. If you have $X and let it earn interest at r percent annually, how much money do you expect to have after one year?

a. $Y b. $Y/(1 + r) c. $Y(1 + r) d. $X/(1 + r) e. $X/r