Find the standard form of the equation of the parabola with a focus at (-4, 0) and a directrix at x = 4.
You can make a total of 32 quarter pound packets by multiplying (8)(4) this leading for you to get 32 quarter packets. :P
A^2 + b^2 = c^2
a^2 + 9^2 = 18^2
a^2 + 81 = 324
a^2 = 243
a = 15.589 = 15.6 feet is the angle the ladder is at :)
A and D because they are both related unlike C and D.