a brick is dropped off of a building. its path can be modeled by h(t)=-16t^{2}+144, where h(t) is the height in feet after 't' seconds. what was the height at 2 seconds?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?