$6 is 20% of a $30 haircut
You would use, Order of Operations, A.K.A PEMDAS.
Parenthesis, Exponets, Multiplication, Division, Addition, Subtraction
Follow that order and you do the work yourself, you would never learn by asking other's for the answer. >:)
From: Dark Angel
Step-by-step explanation:

Answer:
y = 6°
x = 19.4°
Step-by-step explanation:
Use alternating interior angles
The angle adjacent to 5x + 3 is equal to 58 because of alternating interior angles.
58+100+3y+4 = 162 + 3y
162 + 3y = 180
3y = 18
y = 6
The two base angles are equal because the two lines are parallel
5x + 3 = 100
5x = 97
x = 19.4
Hope this helps :)
Have an awesome day!