The normal monthly precipitation P (in inches) in Juneau, Alaska for each month of the year can be approximated by the model P=0.00053t^5−0.02157t^4+0.2854t^3−1 .412t^2+2.19t+3.4, where t=1 represents January.
1. Sketch a graph of the model for
1≤t≤12.

For a short time after a wave is created by wind , the height of the wave can be modeled using y= a sin 2pi(t) / t where a is the amplitude and t is the period of the wave in seconds. how many times over the first 5 seconds does the graph predict the wave to be 2 feet high?