Answer:
Using the vertical line test, the functions are b, c, d, and f
Step-by-step explanation:
a and e both fail the vertical line test, therefore, it's not a functions.
i dont know
x=90°
SUM OF ALL ANGLES OF PENTAGON =540
90+2(180-Y)+105+113=540
90+360-2Y+105+113=540
488-2Y=540