Which of the following is an equation that best describes compound interest?

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases

(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)

Ithink i know it but i want to be sure so can you me out ?