What is log3 6 + log3 13.5

Log base3 (6*13.5)

log base 3 (81)

log base 3 (3) ^4

4 log base 3 (3)

4 * 1 = 4

First condense the logs by using the product rule.

Next rewrite 81 in terms of 3.

Use the power rule and bring the 4 to the front.

log base 3 (3) = 1

Which leaves 4 * 1 = 4