Show all work please no calculators

4. The graph shows the rate snow fell in inches/hour during a 9 hour snowstorm in Mt. Baldy in January 2023. inches/ hour -5 Lol hours (a) How many inches of snow fell during the storm? inches (b) What was the average rate snow fell between the fifth and ninth hours? average rate = inches/ hour (c) How many hours after the start of the storm until 10 inches of snow had fallen? hours