Plz can someone help me

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Which function has the same domain as y=2x

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?