There are 30 red marbles and 10 black marbles in urn #1. you have 20 red and 20 black marbles in urn #2. randomly you pull a marble from the random urn and find that it is red.
what is the probability that it was pulled from urn #1?

If f(x) = 2x - 6 and g(x) = 3x + 9, find (f - g)(x). a. (f-g)(x) = x + 15 o o b. (f- g)(x) = -x - 15 o c. (f- g)(x) = 5x + 3 o d. (f- g)(x) = -x+3 submit

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Which of the following parabolas opens down?