Hi there! I can help you! So the number 17.63 has an x beside it. Looking at the graph, the x-axis represents the number of weeks. So x = number of weeks. 27.52 is the fixed amount, and is the initial amount started out. A, C, and D are all eliminated, because those equations do not fit the line at all. Plus, it doesn't make sense as an answer for this question. The only answer choice that even works is B, because x represents the number of weeks, and 17.63 is besides the variable, which means that $17.63 will be saved each week. The answer is B.