what is 31 billion in scientific notation

we know that[tex] 1 billion=1,000,000,000 [/tex]In scientific notation[tex] 1,000,000,000=1*10^{9} [/tex]To find the value of [tex] 31 billion [/tex]Multiply the value of one billion for [tex] 31 [/tex]so[tex] 31*1*10^{9} =31*10^{9}\\ =3.1*10^{10} [/tex]thereforethe answer is[tex] 3.1*10^{10} [/tex]