Calculating the Number of Periods $[$LO$4]$ At $4\mathrm{.}3$ percent interest, how long does it take to double your money? To quadruple it$?$Calculating Interest Rates $[$LO$3]$ According to the Census Bureau, in October $2019,$ the average house price in the United States was $$368,600.$ In October $2000,$ the average price was $$197,700.$ What was the annual increase in the price of the average house sold?