Help me with 3 and 4

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet. what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet