# precalc word problem exponential/logarithms

**Question description**

a lake is tocked with 1,500 young trout. The number of the original trout alive after x years is given by the function T(x)=1,500e^-0.4x . when will there be 300 of the original trout left?

a. let 300 be the value of t(x). rewrite the eqaution to show this.

b. use natural logarthms to solve the equations for x.

(please do part b step by step, clearly showing each step.

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