Please help me with this

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

Graph each quadratic function and identify its key characteristics. f(x) = x^2 - 2x - 3