In a year, a study found that of the 6 billion people in the world, 4 billion have cell phones. how many people lived without access to cell phones that year? approximately % of the people on the earth lived without access to cell phones

Gia opened two savings accounts at two different banks. one account earns an annual 3.4% simple interest, and the other earns half as much. if she deposited $500 in each account, how much total interest will she have earned in 5 years? a. $34.00 b. $25.50 c. $51.00 d. $510.00