SOLUTION: Bayside Insurance offers two health plans. Under plan A, Giselle would have to pay the first $150 of her medical bills, plus 40% of the rest. Under plan B, Giselle would pay the fi

Question 326592: Bayside Insurance offers two health plans. Under plan A, Giselle would have to pay the first $150 of her medical bills, plus 40% of the rest. Under plan B, Giselle would pay the first $210, but only 30% of the rest. For what amount of medical bills will plan B save Giselle Money. Assume she has over $210 in bills.
I have no idea what to do.
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
plan A: 150+0.4(x-150)
plan B: 210+0.3(x-210)

plan A > plan B
150+0.4(x-150) > 210+0.3(x-210)
150+0.4x+0.4(-150) > 210+0.3x-0.3(210)
150+0.4x-60 > 210+0.3x-63
90+0.4x > 147+0.3x
0.4x-0.3x > 147-90
0.1x > 57
x > 57/0.1
x > 570

She'll save on plan B if she has over $570 in medical bills.
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