Use the change of base formula and a calculator to evaluate the logarithm. Round your answer to two decimal places.
-$\log _ { 2 / 3 } 19$
A) $- 7.26$
B) $8.92$
C) $- 14.52$
D) $7.26$

Question

Quizplus · Accepted Answer

The change of base formula allows us to convert $\log_{2/3} 19$ into a form that can be calculated using a standard calculator: $\log_{2/3} 19 = \frac{\log 19}{\log (2/3)}$. Using a calculator to evaluate this expression gives a value of approximately -7.26.

Use the Change of Base Formula and a Calculator to Evaluate