How do I find the angles

Solutions for 2x+7 less than or equal to 3x-5

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.

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?