Apizza shop offers nine toppings. no topping is used more than once. what is the probability that the toppings on a pizza are pepperoni, onions, and mushrooms?
i think the way to solve it is 9c3 which equals 84. and the probability would be 0.012. but my friend is telling me its wrong because he did it by multiplying 1/9 x 1/8 x 1/7.
can someone tell me who is right?

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00