Answer
Exponential
Please see the graph.
Work Step by Step
The data points would not make a line, so the function is not linear. A quadratic model would have a parabola for a graph, and the data points do not make a parabolic graph.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.