Mario, the famous video game character and Nintendo mascot, was stated in a 1985 interview to be about 5ft tall. With this information, it can be determined that when Mario jumps off the ground, his height above the ground in feet, t seconds after jumping, can be expressed by the function h= -104t^2 + 88t. What is the highest height that Mario can reach? Round your answer to the nearest tenth and type it into the box.