3x - 50 = -20
Add 50 to both sides
3x = 30
x = 10
The number is 10
First question
1:C 2:D 3:B 4:D
second question
0-2+5
Answer: 41, 42, and 43 years old.
Step-by-step explanation:
41 plus 42 plus 43 = 126.
If you need to simplify the equation it would be:

+2r-2n+7
If not sorry..
Hope This Helps!
The answer is D.
|-4| < 4
4 < 4
|-1| < 0
1 < 0
|-6| = -6
6 = -6
|-14| > 10
14 > 10