The table contains price$-$demand and total cost data for the production of extreme$-$cold sleeping bags, where $p$ is the wholesale price $($in dollars$)$ of a sleeping

bag for an annual demand of $x$ sleeping bags and $C$ is the total cost $($in dollars$)$ of producing $x$ sleeping bags. Complete parts $($A$)$ through $($C$)$ below.

$($A$)$ Find a quadratic regression equation for the price$-$demand data, using $x$ as the independent variable.

$p(x)=(-0\mathrm{.}000016)x^2+$

$x+$

$($Round the constant to four decimal places as needed. Round all other values to six decimal places as needed

$($B$)$ Find a linear regression equation for the cost data, using $x$ as the independent variable.

$C(x)=()x+(,)$

$($Round to three decimal places as needed.$)$ CAN YOU ALSO EXPLAIN STEP BY STEP HOW TO DO THIS ON TI$-84$ CALCULATOR $!$ PLEASE