Question 1152982

first find the number of years from {{{1960}}} to {{{2015}}}
{{{2015-1960=55}}}

=>{{{y=55}}}

{{{p=0.077y+ 3.04}}}
{{{p=0.077*55+ 3.04}}}
{{{p=4.235+ 3.04}}}
{{{p=7.275}}}
{{{p=7.28}}}

answer: C.{{{7.28}}} billion