The canopy height (in meters) of the tropical bunch-grass elephant millet t days after mowing (for t ≥ 32) is f(t) = -3.14 + .142t - .0016t² + .0000079t³ - .0000000133t⁴.

(a) Graph f(t) in the window [32, 250] by [-1.2, 4.5].

(b) How tall was the canopy after 100 days?

(c) When was the canopy 2 meters high?

(d) How fast was the canopy growing after 80 days?

(e) When was the canopy growing at the rate of .02 meters per day?

(f) Approximately when was the canopy growing slowest?

(g) Approximately when was the canopy growing fastest?