Kara bought two birthday gifts for her twin nephews. each gift cost $12.50. sales tax was 6.75%. what was the total cost for the gifts, including tax?

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?