The marginal $(derivativeof)costof$ producing $s$ sofas $is{C}^{\text{'}}(s)=12s^2-60s+300,$ where $Cis$ measured $in$ euros per sofa.

${?}_8^5$ Find the net change $incostCin$ euros $of$ increasing production from $80to100$ sofas.

$=D^{[]}Do$ not round any intermediate calculations.

$Do$ not round any intermediate calculations.

$C$:

uros