Plsz help I need the answers pls

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.