For problems 19-24, you fill a box with 73 marbles, 30 of them are blue, 25 are red, 15 are yellow, and the rest are white (all of them are solid colors).
17. If you reach into the box and randomly pick one marble, what is the probability that your marble is white!
18. What is the probability that the one marble you picked is not white?
19. What is the probability that your marble is either blue or red?
20. What is the probability that your marble is red and black?

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times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,