Find the errors what equation do you get when you solve each equation for x

Given this information, which expression must represent the value of b?

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

Need same math paper but the back now i hope your able to read it cleary i need with hw