Which equation has (2, -1) as a solution? a. y = 2x - 1 b. y = x + 3 c. y = x - 3 d. y = -2x + 1 if someone could explain this to me it would be greatly appreciated. you.

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students