solve exponential equation. For AP calculus?

Question

How do you solve this exponential equation?

6^(x + 1) = 20

Answer 1

6^(x + 1) = 20

Take log of both sides:
log 6^(x + 1) = log 20

Take the exponent out of the log:
(x + 1) log 6 = log 20

Solve:
x + 1 = log 20 / log 6 = 1.672
x = 0.672 (solution!)

Answer 2

6^(x + a million) = 20 (x + a million)ln(6) = ln(20) xln(6) + ln(6) = ln(20) xln(6) = ln(20) - ln(6) x = (ln(20) - ln(6))/(ln(6)) ANS : x = (ln(20) - ln(6))/(ln(6)) or (ln(20)/ln(6)) - a million or about .672