2.12+3x=9.45
each juice was about $2.44, so your answer was correct!
To determine the probability that one or the other circumstances will occur, you will count the number of possible outcomes and divide it by all the possible outcomes.
#of female teaching assistants + # of male teaching assistants + # of female professors
6 + 16 + 11 = 33
Total = 41
33/41 = 80
There is a approximate 80% probability that one or the other will occur.
It will take Jon 240 minutes or 4 hours.
1 and 1/8 of an hour because Alisha took away that amount of time from johns time.<span />