Answer:
b 16in
Step-by-step explanation:
2x+x+=48
3x=48
48/3x
x=16
16+16+8+8=48
Correct Answer = 5
Incorrect Answer = -2
Unanswered = 0
22 correct answers = 22*5 = 110
15 incorrect answers = 15*-2 = -30
7 unanswered = 7*0 = 0
Add all the answers up : 110-30+0
Score = 80
4w + 3 = 2w + 7
-[2w] -2w
-----------------------
2w + 3 = 7
-3 -[3]
----------------------
2w = [4]
2w = 4
---- ----
2 [2]
w = [2]