I need help on this question

Select the quadratic that has root x = 8 and x = -5

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

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?