Step 1 :1. Find growth factor: \(r = \left(\frac{89,250}{71,500}\right)^{\frac{1}{8-1}} - 1\)
Step 2 :2. Exponential model: \(P(t) = 71,500(1 + r)^{t-2015}\)
Step 3 :3. Predict fox population in 2030: \(P(2030) = 71,500(1 + r)^{2030-2015}\)
Step 4 :4. Predict when population reaches 125,000: \(125,000 = 71,500(1 + r)^{t-2015}\)