220 million drive cars in the us. if 44 million consider buying a hybrid, what percentage of us drivers are considering buying a hybrid in 2020? what would the standard deviation be?

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

(c) the diagram shows the first three shapes of a matchsticks arrangement. first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?