The answer looks like it's A.
Answer:
Step-by-step explanation: the way to find missing anlges are to use trigrometery
Slope intercept form
y = mx + b
change it to standard form
ax +by = c
y = -1.7x + 8.5
1.7x + y = 8.5
multiply 10 on both side
17x + 10y = 85
hope this help