Given that p
(
x
)
=
1
x
+
22
and that
d
(
x
)
=
p
(
3
x
)
, write the formula for
d

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?