If u risk a dollar to flip a coin heads 4 times in a row and are paid only 12 dollars if u win, how much are you being shortchanged by

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

If you could answer these your a life saver

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document