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OpenStudy (anonymous):
solve 8+5(2)^x=79
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OpenStudy (anonymous):
x=log71
OpenStudy (anonymous):
subtract 8 from both sides and you get 5(2)^x=71 i think this can be reduced to 10^x=71 then from here you use the definition of a log to see that x=log71 [a^x=b is equivalent to log base a (b)] you can type log 71 into your calculator because the logarithm has a base of 10
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