Sierra left $4.50 as a tip for the waiter. this was 18% of the bill before the tip how much was her total bill before the tip?

50 points~ ! i have to turn this in tomarrow

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.

What is the measure of ac? enter your answer in the box. (4x - 5.5) (5x+25)