Miachel works 15.5 hours each week at a music store. he earns 9.48 an hour. how much does miachel earn each week?

Based on the figures as marked, /\rqs = —

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?

This is about circle theorems. someone asap : (