Please help me on 8 and 9 I’m begging you please

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

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

What are the soultion(s) to the quadratic equation 40- x^2=0