At 9:00 a.m Monday morning, Thomas fills a beaker with water and places it in the corner of the classroom. At 1:00 p.m. on Tuesday,Thomas examines the beaker and notices that the water level is 42 milliliters. At 11:00 a.m.on Wednesday, the water level has dropped to 31 milliliters. If the evaporation of the water follows a linear function, at what time will the beaker be empty? 1:00 a.m. on Thursday 2:30 a.m. on Thursday 1:00 a.m. on Saturday 6:00 a.m on Saturday

## Step 1<br />First, we need to calculate the rate of evaporation. The water level decreased from 42 milliliters to 31 milliliters over 24 hours (from 1:00 p.m. on Tuesday to 11:00 a.m. on Wednesday). This is a decrease of 11 milliliters over 24 hours.<br /><br />### **Rate of evaporation = \(\frac{Change\ in\ water\ level}{Time\ elapsed}\)**<br /><br />## Step 2<br />Next, we need to calculate the time it will take for the beaker to be empty. We know that the beaker starts with 42 milliliters of water and the rate of evaporation is 0.458 milliliters per hour. <br /><br />### **Time to empty the beaker = \(\frac{Initial\ water\ level}{Rate\ of\ evaporation}\)**<br /><br />## Step 3<br />Finally, we need to add this time to the initial time of 1:00 p.m. on Tuesday to find the time when the beaker will be empty.