Ummm can someone help me with this question

Three coins are flipped. what is the probability that there will be at least two tails?

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

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)