Arecipe calls for 4 cups of flour. lauren wants to make 20% more servings than the recipe makes. which expression represents how many cups of flour lauren should use?

a.1/5*4
b.4/5*4
c.6/5*4
d.9/5*4

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?