Yes this is so because 2is composite, but it is a multiple of 4,6,8,10...
14) Since f=5, f + 69 = 74
15) Since w = 23, w + 45 = 68
G/f(x) = x^2 - 6 / 3x + 1
3x + 1 = x^2 - 6
x^2 - 3x - 6 - 1 = 0
x^2 - 3x - 7 = 0
x = 4.54 , x = - 1.54
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