Question

Log Help: 5^(4x-3)=20
Can anyone help I am not sure how to do this step by step

Answer 1

In order to isolate the exponent to solve for the variable, you need to use logs (which undo exponents)


\[\large 5^{4x-3}=20\]


\[\large \log\left(5^{4x-3}\right)=\log(20)\]


\[\large (4x-3)\log\left(5\right)=\log(20)\]


\[\large 4x*\log\left(5\right)-3\log\left(5\right)=\log(20)\]


I'll let you finish up

Answer 2

Wow thanks.

Answer 3

np