Which graph shows the solution to the system of linear inequalities? y > 2/3 * x + 3; y <= - 1/3 * x + 2

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?