After a flood, a city fire department uses res pumps to drain water from flooded basements. All three pumps can drain all the water a flooded basement in 6 hours, 5 hours and 4 hours, respectively. If the turn on simultaneously, how long does it take to empty the basement​

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.