Find an equation of the line perpendicular to the graph of 14x - 7=4 that passes through the point at (2,9)

Me with this one question, and i'll upvote the brainliest answer

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

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?