A firm's individual demand for good $$ satisfies,

$ln{Q}_x=2-3\mathrm{.}6ln{P}_x+(-0\mathrm{.}2)ln{P}_Y+(0\mathrm{.}65)lnM+(1\mathrm{.}3)ln{A}_x.$

$Q_x$ is quantity of $x,P_x$ is the price of $x,P_Y$ is the price of $Y,$ a related good, $A$ is advertising and $M$ is income level. If the current advertising budget is $A=$$$2804.$ What should their advertising be to increase quantity demanded by $15\%?$

$

A new ad campaign for $Y$ has increased $P_Y$ by