Given the depth vs. clock time function y = f(t) = .016 t2 + -2.06 t + 84, with depth in cm when clock time is in seconds, find the clock time t such that f(t) = 64.69376 cm and find f(t) when t = 34 cm. Find the clock time when water depth is 23.69376 cm. Using the same function determine the depth at clock time t = 12 sec.