Set the function equal to 0 and solve for
x= 3,2 + i, 2 −i
This is a weighted average basically take the percentages and multiply them by the amount. The total sum is the amount you will make.
0.4(-25000) + 0.25(0) + 0.35(40000)
-10000 + 0 + 14000
4000 is the expected value
What you would do is 30x5 which is 1500 and 14x12 which is 168
Then you would just divide 1500/168 and get (at most) 8
Steven has 63 crayons because since he has 9 times as more as Paul... you multiply 9 by 7 and get 63 :)
