y=(1/2)^x
Condense: 4^(x+7)/2^(3x+4)
y=-3^x+2
Condense: 16^(3a)*4^(2a)
y=2^(-x+3)+4
y=(1/3)^(x-6)-2
2^(-x+10)
2^(16a)=4^(8a)=16^(4a)
y=2^x+5
