Answer:
36
Step-by-step explanation:
You subtract 180 from 56 then add your answer, 124 to 20, then subtract 144 from 180 to get 36
The reflection across the x-axis only change the signal of the y coordinate. Hence, the new point is

.
Answer:
C) 
Step-by-step explanation:

AB=h can be found with
tan 60° =AB / AC, and AB=h= tan60° x AC
h= 14* 1.73=24.24