They got a discount and had to pay $42 per 6 footballs. What did the team have to pay per football?

Chose the graph below that represents the following system of inequality’s

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 expression is rational? 6. , square root two, square root 14, square root 49