URGENT whom gets this and answers right gets extra! What is the average speed of a bike rider who rides for 3 hours at 40km/hr and then 2 more hours at 50km/hr?!

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30