Question

Point V lies between points U and W on .


If UW = 9x – 9, what is UW in units?

5 units
6 units
30 units
36 units

Answer 1

UW = UV + VW
9x-9 = 2x - 4 + 4x + 10
9x - 9 = 6x + 6
3x = 15
x = 5

UW = 9(5) - 9 = 45 - 9 = 36

answer is 

36 units (last choice)

Answer 2

i agree. it is 36 units