A scuba diver jumps into the water off the coast of Key West to see how deep he can descend and return to the source in about 5.8 minutes. After 60 seconds, he reaches a depth of 4 meters. At 180 seconds, he's at 8 meters from sea level. Upon his return to sea level, the diver noticed he was back at 4 meters below sea level after 5 minutes,
The distance, in meters, the scuba diver traveled from sea level is a function of t, time, in minutes, and can be modeled by a quadratic function.
What is the quadratic function of the distance of the diver from sea level, d, as a function of t, time in minutes, in vertex form?
d(t) = ?