Question 1111150

{{{ P(x)=20+5log (3,x+3)}}}

if  {{{P(x)= 40}}}(million  dollars)

{{{40 =20+5log (3,x+3)}}}

{{{5log (3,x+3)=40 -20}}}

{{{5log (3,x+3)=20}}}

{{{log (3,x+3)=20/5}}}

{{{log (3,x+3)=4}}}

{{{log (x+3)/log(3)=74}}}

{{{log (x+3)=4*log(3)}}}

{{{log (x+3)=log(3^4)}}}

{{{x+3=3^4}}}

{{{x=81-3}}}

{{{x=78}}} millions