Which set of ordered pairs could be generated by an exponential function?
(-,,1)
(-1,-1), (0, 0), (1, 1), (2, 8)
1-11 - 2), (0, 1), (1, 2), (2, 4)
(-1, 1), (0, 0), (1, 1), (2, 4)

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?