SOLUTION: Use log4(7) ≈ 1.4037 and log4 (3) ≈ 0.7925 to approximate the value of each expression. log4 (21) and log4 (7/12) Thanks.

SOLUTION: Use log4(7) ≈ 1.4037 and log4 (3) ≈ 0.7925 to approximate the value of each expression. log4 (21) and log4 (7/12) Thanks.

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Question 1039802: Use log4(7) ≈ 1.4037 and log4 (3) ≈ 0.7925 to approximate the value of each expression.
log4 (21)
and
log4 (7/12)
Thanks.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Use the log rules to say

(this is approximate)

and

(this is also approximate)
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