A store purchased baseball bats for $26 and sold them for $28.86. What percentage is the mark-up?

Can someone me with this problem . show your work .

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

The total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?