### Home > PC3 > Chapter Ch8 > Lesson 8.1.2 > Problem 8-30

8-30.

An exponential function passes through the points . Write an equation for the function.

Write the general equation for this problem.

Substitute the points in for

Subtract

Then divide one equation by the other.

Divide the equations and solve for .

Substitute the -value back into one of the original equations and solve for

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