Answer:
3
Step-by-step explanation:
[tex]\left(1^0+2^0+3^0\right)\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\mathrm{Calculate\:within\:parentheses}\\\mathrm{Calculate\:exponents}\:1^0\::\quad 1\\1^0\\1^0=1\\=1\\\mathrm{Calculate\:exponents}\:2^0\::\quad 1\\2^0\\2^0=1\\=1\\=1+1+3^0\\[/tex]
[tex]\mathrm{Calculate\:exponents}\:3^0\::\quad 1\\3^0\\3^0=1\\=1\\=1+1+1\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:1+1+1\::\quad 3\\1+1+1\\1+1=2\\=2+1\\2+1=3\\=3[/tex]
Anything to the power of 0 is effectively 1 so 10^0 will equal to 1 or 100^0 will equal 1. So you are basically doing 1+1+1 which equals 3
