<em>Total number of coin that George has 16 + 28 + 32 + 4 = 80 coins total number of coins sold by George = 15% of 80 = 15/100 X 80 = 12 coins (ans)</em>
F(x) = g(x) 3(2) - 4 = (2)² - 2 6 - 4 = 4 - 2 2 = 2 I just substituted all the values in the domain to see which one would work. That's not really the quickest way but that's the only way I know
