The square root of number that is two bigger than k is twice as big as the square root of the number one less than k. What is k

Plot the intercepts to graph the equation

(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)

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.