From the question, About how many subscription did the class of 30 students sell, We need to consider the Given which is x = 30: So The value of y is given by: y = 175 (approximately)
For this case, the first thing to do is to observe the value that the function takes on the axis y, when on the x axis we have 30 students. We have then: For x = 30: The value of y is given by: y = 175 (approximately) Answer: y = 175 subscriptions