plans, under plan A, Giselle would have to pay the first 130 dollars of her nedical bills plus 35% of the rest. Under plan B Giselle would pay the first 210 dollars but only 20% of the rest. for what amount of medical bills will plan B save Giselle money? assume she has over 210 in bills. She would savew with plan B if she had more than ? in bills
$130 + .35x = $210 + .2x will indicate how big the bills have to be to make the plans equal. Higher than that, Giselle will save with plan B.
That should give you a start.