You want to buy a new jacket for winter, the Jacket is on discount. Find the percent of discount. Round to the nearest tenth
original price $22,680: selling price $19,300

please help<3

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?