How do you rewrite a logarithm into expression using natural logs?

Question

I need to rewrite the expression log base 5 (x+3) into an equivalent expression using only natural logarithms. Any help would be appreciated. Thx.

Answer 1

change of base formula

ln(x+3)/ln(5)

make it a good day

Answer 2

ln(x+3)/ln(5)

Answer 3

Let log be log to base 5

y = log (x + 3)

5^y = x + 3

ln (5^y) = ln (x + 3)

y ln 5 = ln (x + 3)

y = ln (x + 3) / ln 5