As x approaches negative infinity, for which of the following functions does f(x) approach positive infinity? Select all that apply. Select all that apply: f(x)=2x5 f(x)=9x4+100 f(x)=6x8+9x6+32 f(x)=8x3+11 f(x)=10x6+5x+26 f(x)=x7+8x4+248