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**Incursion** I have a project where I have to find the costs of going to a 4 year college now, costs to send a future child, and the time it takes to double, triple, and quadruple the costs. I'm having trouble finding the right equation, I believe I'm suppose to graph A = P(1 + R)^T or Pa^X , where the rate (rate of inflation in this case) is 7.18 percent (.0718), but the graphs just aren't making sense. So, maybe I'm graphing the wrong equation all together, or maybe just inputting the wrong values for P, R, T, X?