Please help with final question I can't understand how to get the 3hrs and 15mins

19 2 A person is driving a car on a straight road. The graph K shows the distance y in miles that the individual is from home after x hours. 160 Find the slope-intercept form of the line. (3.95) y = 30 x + 5 How fast is the car traveling? (1,35) 30 miles per hour (Type an integer or decimal.) Time (in hours) How far was the individual from home initially? 5 miles (Type an integer or decimal.) How far was the individual from home after 3 hours and 15 minutes? miles (Type an integer or decimal.)