The equation on number 3 is showing that Henry hikes 0.5 miles per hour, with x = number of hours. The graph shows that Clark hikes 15 miles in 10 hours, or 1.5 miles per hour. Clark is faster because of the reasons listed above.
Problem 4 is strange because it has a different value from x = 1 to x = 4 than it does for x = 5 and above, but my best guess would be a piecewise function: If x < or equal to 4, 15x. If x > 4, 10 × (x - 4) + 60.
Problem 5 is much simpler: because x goes up 16 every time y goes up 6, 6/16 × x or (6/16)x.
12:00 to 1:30 , that is 90 minutes if 35 people enter each minute then it should be multiplied by the number of minutes that being said, 90 x 35 = 3,150 people are in the stadium at 1:30
