Evaluate f(x)=-7x+3 when x=-2, x=0, and x=5

Find the cosine function that is represented in the graph.

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?