You would start out with multiplying giving you 5(x+6). then you would have a product of 5x+30. hoped this helped!
Answer: 29/139
Explanation:
Total student: 139 (66 boys/73 girls)
Football: 56 student (28 boy/28 girl)
Tennis: 54 student (27 boy/ 27 girl)
Running: 29 student (18 girls/11 boys)
The probability that a student chose running is 29/139
So I looked it up and it says something about 8 hours