Someone pls help it a exam I’ll give brainiest :)

Which function has the same domain as y=2x

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab