Which of the following is a random sample of new car owners? a. pollsters randomly selecting new owner names from customer purchase lists to survey. b. a car dealership representative talks to purchasers of new cars. c. owners of new cars are surveyed as they leave a fast-food restaurant. d. owners of hybrid cars are surveyed at gas stations.

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?