Answer:
32 minutes
Explanation:
1. 2.5 x 32 = 80
2. 180.3 - 80 = 100.3
Sooo yeah. It took 32 minutes to cool the water to 100.3 degrees Fahrenheit because the rate the temp. was dropping per minute was -2.5... we had to figure out what you could multiply 2.5 by to get 80 (32).