Over the course of two weeks, al spent $105.00 on lunch. what was the average cost per day

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

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?