What is an equivalent ratio to 7 to 9

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

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

What is the value of x? enter your answer in the box.