4. A parabolic reflector is to be fit into a cylinder that has a diameter of 10 cm and a
height of 8 cm.
a. Write the equation for the parabola that describes the cross section of the reflector.
b. How far from the central axis of the cylinder is the distance from the reflector to the
top of the cylinder equal to the distance from the reflector to the base of the cylinder?

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Find the zeros of each function. f(x) = 6x^2 - 7x - 20