help with solving this logatherm

Question

0

732

4

+143

a.		c.	3
b.		d.	–3

+33616

+5

Best Answer

343 = 7 ³, so log ₇(1/343) = log ₇(7 ^-3) = -3*log ₇(7) = -3*1 = -3

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Alan Dec 4, 2014

Alan · Answer 1 · 2014-12-04T04:41:37

343 = 7 ³, so log ₇(1/343) = log ₇(7 ^-3) = -3*log ₇(7) = -3*1 = -3

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CPhill · Answer 2 · 2014-12-04T03:41:44

We can use the change-of-base rule to solve this......

We have

log (1/343) / log(7)

You should be able to finish this.....

mishforever21 · Answer 3 · 2014-12-04T03:47:06

i may need a little more help

CPhill · Answer 4 · 2014-12-04T03:53:02

OK....did you get the correct answer to that one??