A ball is thrown off a cliff. The height of the ball off the ground after time t is given by the equation h(t)= -5^2 - 5t + 180. How high is the cliff? How long does it take the ball to reach a ledge 80m high?

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

What are the solutions to the equation 4x2+3x=24-x