Find the inverse of the function y = x^2 + 4x +4

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Don't know how to find x given these segment lengths

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?