Write the inequaility this number line r5epresent 36 37 38 39 40 41 42

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Write the equations in logarithmic form 9^4=6,561