All pairs of vertical angles are equal. true false

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Negative 5 1/12 + negative 4 1/4 + 6 3/4

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?