A 95% confidence interval is (70, 110). What is the margin of error? O A. 20 OB. 19 O C. 38 D. 40​

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?