An official from the securities commission estimates that 80% of all online bankers have profited from the use of insider information. Assume that 20 online bankers are selected at random from the commission’s registry. Define X as the number of online bankers have profited from the use of insider information. Find the probability that at most 15 online bankers have profited from insider information. a. 0.630 b. 0.196 c. 0.370 d. 0.

Beatrice decides she wants to babysit a few children at the same time to earn the money faster. she tells parents that if they allow her to babysit their children at her house, she will eliminate her automatic $5 tip and will give them an additional $5 discount. (a) write an equation showing the total cost for each client. identify all variables. (b) four parents bring their children to beatrice’s house at the same time for babysitting. beatrice wants to find out how many hours she must babysit the 4 children to earn exactly the $100 she needs in order to buy the present for her mother. write and solve an equation to find the number of hours. justify each step in the solution. (c) one parent decides not to drop off her child. the remaining 3 parents drop their children off at 9 a. m. two of the parents say they will be back at 1 p. m. the third parent says she will pick up her child at 2 p. m. at noon, beatrice realizes she needs feeding the 3 ch

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)