4x + 6 - 11 help needed

Can any one me with the answers to these questions asap?

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 this problem! extra ! 3025/5.5 = a/90.75