Answer
$15582.8$.
Work Step by Step
Using part a), our model is (if $x$ is the number of years passed since the cost yearly was $5200$):
$5200(1+0.116)^x=5200(1.116)^x$.
Plugging in $x=10$ we get: $5200(1.116)^{10}=15582.8$.
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