The revenue from selling x shirts is r(x) = 11x.
the cost of buying x shirts is c(x) = 6x + 20.
the profit from selling x shirts is p(x) = r(x) – c(x).
what is p(x)?
a. p(x) = 5x – 20
b. p(x) = 17x – 20
c. p(x) = 5x + 20
d. p(x) = 17x + 20

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?