For each handmade greeting card jacqui sells, she makes a person profit of $0.75 . in one week, she made a profit of $42 . she sells the cards for $0.75 each. about how many greeting cards did jacquie that week.

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?