Mary noticed 5 ants in her pantry on Monday. On Tuesday she counted 15 ants in the pantry. On Wednesday she counted 45 ants in the pantry. Day Ants Monday 0 5 Tuesday 1 15 Wednesday 2 45 Part A Determine an exponential function model (y=abx) to represent the number of ants in the pantry in terms of the number of elapsed days. Explain how you arrived at your model. Part B Does the problem situation represent exponential growth or decay? Justify your reasoning