1960 there were 3,000 million people on earth, in 1999 there were 6,000 million people on earth, what was the approximate rate of incresse in million of people

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

Which expression is equivalent to 5a/4 - b/8 ?

For each given situation, determine if the method of randomization is either appropriate or not appropriate