Farmer John is testing two different fertilizers, Magic Grow and Sprout Up, on his shrubs. The graph shows the linear relationship between the number of days he applied the fertilizer to two different shrubs, and their height.
After how many weeks does it appear that both shrubs are the same height?
a 80
b 90
c 6
d 5
The answer is b) 90.
From the graph, it can be seen that both shrubs reach the same height on day 90.