Use a graft to estimate the solution. Under one student health insurance plan, an individual pays the 1st 200 of an emergency room visit plus 1/4 of all charges in excess of $200.00. By approximately how much did Jerry's hospital bill exceed $200.00 if an emergency room visit cost him a total of $600.00? Jerry's hospital bill is blank, more than 200. So the first thing we're going to do is we're going to come up with an equation Y equal 200 + 1/4 X where X represents the excess or the amount over $200.00. So we're going to graph this equation. We have AY intercept of 200. Actually it's a point that's important to really understand. It's the .0200 and it has a slope of 1/4. So if we go to the .0200 and then we go up one and over four, up one and over four, in this case, I'm going up 100 and over 400, up 100 and over 400. Then we want to know how much it's going to cost if the total was 600, if an emergency room visit cost him a total of 600. So now we're putting in 600 here. So if we look at this, we want to figure out where those two intersect, and it looks like they're going to intersect right here, which would be, oh, I lied, I'm off by a little bit, sorry. Looks like they're going to intersect right here. One of the problems with graphing is it's very hard to get accurate. That's why algebra sometimes is much more efficient method over the graphing. So it's $1600 more than the original 200.