10. Determine if the equation x - - y4 = 1 defines y as a function of x.
Yes. One input results in one output.
No. At least one input results in more than one output.
No. At least one output results in more than one input.
Yes. One output results in one input.

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Which shows the graph of the solution set of 3y – 2x > –18?

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?