What does x equal? e^{7x}<20

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Answer 1 · 2018-05-07T13:33:40

#x<(ln20)/7#

#e^(7x)<20#

Apply natural logarithm,

#cancel(ln e)^(7x)< ln20#

Therefore,

#7x< ln20#

Divide both sides by #7#,

#x<(ln20)/7#