Tucker wants to buy a new chromebook for himself. The chromebook he wants costs $390.32, after his discount. He already has $170 saved. His grandfather said he would pay him $15 an hour to clean up his large yard. How many hours would Tucker have to work to be able to afford his chromebook

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68⁄33 d. 6.24 = 66⁄25

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122