Write an equation out the cosine function with amplitude 2 and period of 6pi
y=-2 cos (1/6x)
y=-1/2 cos (1/3x)
y=2 cos (1/3x)
y=1/2 cos (1/6x)

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters