To determine which fertilizer will help his plant reach 2 feet of growth the fastest, Omar would need to compare the rates of growth of both fertilizers. Since the growth is modeled by linear equations, the key attribute to compare would be the slope of each linear function (which represents the growth rate per week).
However, among the response options provided, the most appropriate one related to comparing growth would involve understanding the time it takes to reach the desired height. Therefore, the relevant comparison would be looking at when each model reaches a height of 2 feet.
Since none of the provided options directly mention comparing slopes or growth rates, we can infer that Omar would likely need to compare the maximum values (which would correspond to the projections of growth over time). Hence, the best fitting option among those given would be:
Omar would need to compare the maximums from [0,2].
This implies finding out which fertilizer reaches the maximum growth of 2 feet in the least amount of time.