find the measure of the angle indicated (URGENT/GIVING BRAINLIEST)

Answer:
D
Step-by-step explanation:
First you must find x
There is this theorem( i forgot its name im sorry) that says angle RSN= angle R+angle Q
So 16x+10=88+5x+10
Subtract 10 from both sides to get
16x=88+5x
Then subtract 5x from both sides to get
16x-5x=88
Which simplifies to 11x=88
Then divide both sides by 11 to get
X=8
And the measure of angle Q is 5x+10
So 5(8)+10 equals 50