Which could be the function graphed below?

If 3x+8=3x+8 is it one solution or no solution

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?