Question 1153080
A compute manufacturer finds that when x millions of dollars are spent on research, the profit, P(x), in millions of dollars is given by
 P(x) = 20 + 5log(base 3)(x+3).
 How much should be spent on research to make a profit of 49 million dollars.
{{{20 + 5*log(3,(x+3)) = 49}}}
{{{5*log(3,(x+3)) = 49 - 20}}}
{{{5*log(3,(x+3)) = 29}}}
{{{log(3,(x+3)) = 29/5}}}
{{{log(3,(x+3)) = 5.8}}}
Exponent equiv of logs
{{{(x+3) = 3^5.8}}}
use your calc
x + 3 = 585.2
subtract 3 from both side
x = 582.2 million