I think the answer is third one. Hoped this helped!
Answer: $21.84
Step-by-step explanation: (2/15)60 = 8days
8(2.73) = $21.84
Standard form is y = mx + b.
To find the slope, m, we must find the 'rise over run,' or the difference in y divided by the difference in x. We do this by:

Therefore, the slope is 8/3.
To find b, we must plug in the slope and one point:

Therefore, b is 25/9, and the total equation is
(x-5)(x+8) is your answer!