The tables below show running hours of three printers that produce greeting cards and the total number of greeting cards produced over three weeks. Printer B uses $15 in ink every hour. What is the ink cost for each card coming from printer B?

If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.

What numbers are included in the set of integers? what numbers are not included?

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?