3x√−8=7 help me algebra 2

How many lines can be drawn through points j and k? 0 1 2 3

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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?