Henry works in a store where he earns a 3% commission on wverytging he sells. what will be his total commission on a day when he sells three items, priced at $86,$245, and $245? how much must he sell to earn $60 in commission?

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 a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Who long does it take to drive 150 miles at 45 miles per hour