Which one? Go to www.mathpapa.com and put this in "<span>y = <span><span>−<span>2x </span></span>− 4</span></span>; <span>y = <span><span>2x </span>− <span>4" That is 1st </span></span></span>For 2nd put this in "y = 1/2x + -11/2; y = -2x + 2"
He makes it up by 1/3=.333%=$75*1.333=$99.98 he then discounts it by 20%=1/5=99.98/5=$19.99 If the original profit is $99.98-$75=$24.98 and then discounted by $19.99 it would be $24.98-$19.99 = $4.99
