15p+3(p-1)>3(2) exponent of 3 on two
15p + 3(p-1) > 3(2^3)15p + 3p - 3 > 3(8)18p - 3 > 2418p > 24 + 318p > 27p > 27/18p > 3/2 or 1 1/2