Answer:
5x
Step-by-step explanation:
It’s 5x
X + 2x + x + 10 = 90
4x = 80
x = 20
Try using a site like Khan Academy to get a solution
Answer:
0.64
Step-by-step explanation:
The probability that randomly selected student doesn't own a mobile device with internet capabilities is
and the probability that randomly selected student owns a mobile device with internet capabilities is 
If 20 students are selected at random, the probability that at most 5 students (0 students, 1 student, 2 students, 3 students, 4 students or 5 students) don't own a mobile device with internet capabilities is

Answer:
I'm not sure how to answer this.
Step-by-step explanation:
Is this the full question? The context seems to be missing something. Who are Ben and Scott and who are the other 2 candidates?
Maybe post another question and rephrase it.