Ineed some , can't figure out this last question.

Find the length of cu, the triangles are similar.

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?