Ican’t find the missing side length for this special right triangle, could someone me ?

Can someone me i’m confused. will give brainliest and a whole bunch of points

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

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3