Data was collected by an environmentalist on the water level right after a large rain, then in the days after the rain has stopped, to see how fast the water is going down. The water level, L, was measured in feet and the time that had passed, d, was measured in days. The line of fit is given by L = 34.812 + 0.537d. If it has been 3 days since the last rainfall, what is the expected water level?