Find the distance between the pair of points. (−4, 5) and (−9, 5)

Solve the system of equations. y= 2x y= x^2 - 15

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?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.