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Mathematics 8 Online
OpenStudy (anonymous):

log4(64)=?

OpenStudy (anonymous):

3

OpenStudy (anonymous):

how u do?

OpenStudy (anonymous):

what number do you raise 4 to, to get 64

OpenStudy (anonymous):

4^?=64

OpenStudy (anonymous):

3

OpenStudy (anonymous):

you should be able to switch between \[\log_b(x)=y\] to \[b^y=x\] without agony

OpenStudy (anonymous):

for many problems that is all you need to do. go from one form to the other

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

x = log_a y MEANS y=a^x so in your case 64 = 4^x -> x=3 (The log is the inverse of the exponential function)

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