ILL BECOME A FAN :) who can help me with an algebra question??

Question

anonymous · Answer

if a function, f(x) is shifted four units to the left, what function represents the transformation ? 
a. f (x-4)
b. f (x) -4
c. f (x+4)
d. f (x) +4

anonymous · Answer

"four units to the left" it means horizontal shift..
$af(b(x-c))+d$, c is the horizontal shift.. it says "to the left" so let's put $-4$ in this one you'll get $f(x+4)$.. 
i hope you understand, i'm not good at explaining XD

anonymous · Answer

Thank you so much! :)

anonymous · Answer

np :)

anonymous · Answer

thanks also :)

anonymous · Answer

are you still there? think you could help me with one more question :) ?

anonymous · Answer

lol, i'll try..

anonymous · Answer

what is the value of log[81]3?
a.3
b.1/4
c.4
d.1/3

anonymous · Answer

I REALLY appreciate it :D !!!!

anonymous · Answer

did you try using calculator? O.o
anyways.. i believe that $81^{1/4}$ will give you 3 ... 
81 is the base right?

anonymous · Answer

yes i believe so, and i don't have my calculator with me. thats the problem :/ lol

anonymous · Answer

yeah it's 1/4..

anonymous · Answer

can you explain how you did that pretty please ?!

anonymous · Answer

i'm not sure but this is how i did it: http://www.sketchtoy.com/57083962

anonymous · Answer

thanks a bunch! I was close but that really helped!!

anonymous · Answer

whoa, thanks for that sweet comment even though i did not explain it to you, i just showed you my solution XD

anonymous · Answer

your welcome! I just wanted you to feel appreciated for helping me !

anonymous · Answer

(^_^)