Function R gives the amount of rain measured by a rain gauge t hours since it started raining. The amount of rain is measured in millimeters. What does each expression or equation represent in this situation? a. (3) d b. (0.5)=14 d Use function notation to represent each statement. c. Six hours after it started raining, the amount of rain was 37 millimeters. d. The amount of rain 90 minutes after it started raining was the same as the amount 120 minutes after it started raining. (REMINDER: 60 minutes=1 hour)