What is the most mark can make per hour if he makes less than 200 dollars in 7.5 hours

Standard deviation of 19,29,21,22,23

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Aparking garage charges $1.12 for the first hour and 0.50 for each additional hour. what is the maximum length of time tom can park in the garage if we wishes to play no more than $5.62