What is the value of the expression 3z-3 when z=7

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?

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge

How many doughnuts are equal to 20 cookies.? 3 apples = 5 bananas6 cookies = 7 apples2 doughnuts = 1 banana