82/514
(30+2x)(20+2x)
66/514
x^3-3x+3
3^2x+1-18(3^x)-81=0
17/216
Optimize griphically x = 300x + 400y subject to 6x + 10y >= 60 4x + 4y >= 32 x <= y xy >= 0
5.40-3.50 whot
