Answer:
D.) 3x - 3
Step-by-step explanation:
X - 4 + 2x + 1
= X + 2x - 4 + 1
= 3x - 4 + 1
= 3x - 3
I hope this helps!
In this question, it is given that the measurement of angles USW and TSR are 7x-34 and 4x+9 .
First we have to find the relationship between those two angles .
And these angles are vertical opposite angles which are congruent .
Therefore


Therefore measurement of angle USW is

18+12*4=18+48=66 ft
1st floor is 18ft
next 4 are 12ft