38 rounds to 40.
29 rounds to 30.
40 x 30 = 120.
Answer:

Step-by-step explanation:


Answer:
725 dollars probably
Step-by-step explanation:
it really depends on how much is cut away from his check from business expenses and how much his boss would take
Mu=80, sigma=39, X=85
Z=(X-mu)/sigma = 5/39=0.128=0.13
P(X<=85)= 0.5517 (from Z-table)
so, P(X>85)=1-0.5517=0.4483 approx. thats 44.8% probability.
Answer:
There are 21 ways to choose the first person, 20 ways to choose the second, 19 ways for the third and 18 ways for the fourth so the answer is 21 * 20 * 19 * 18 = 143640.