Answer:
x=-7
Step-by-step explanation:
Use point (1, 3.5) on the graph
x = 1, y = 3.5
k = 3.5
2.5 hours roughly (2 hours 29 mins)
-3i - 4 = i + 3
-3i - i = 3 + 4
-4i = 7
i = 7/-4 or -7/4