**a rock dropped from a 100 foot tower.
the height of the rock as a function of time
can be modeled by the equation: h(t) =
- 16t2 + 10t + 100. how long does it take
for the rock to reach the ground?

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2