If you buy 3 books at $3.95 each, how much change will you get from $20? * show work*

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

What is not true about kl and mn? what is mn? (show your work)

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.