Question

MATH TUTORING NEEDED

Answer 1

Do you have a question? e.e

Answer 2

not really its more i have a algerbra DBA and i need to get the hang of the order of operations and other things so i can do well cause i SUCKKKKKKK at algerbra

Answer 3

ill go to the review test and put the questions i got wrong here so we can show me how to do dem

Answer 4

Ooooooooo
The teacher probably has a study guide on her/his homepage. c:
On the modules' study guide, it will show most questions the teacher will ask. cx

Answer 5

thx elsha ill look at it but i still would like a little practice and help here

Answer 6

Hehe, das all I know. e.e

Answer 7

he just had vocab review so i need help here e.e

Answer 8

@SmokeyBrown

Answer 9

Errything should be mentioned in the lesson.


BREH
My Algebra teacher only asked me about vocabulary. cx
But there was one question that wasn't vocabulary... e.e
Eh, I dunno.
Hai derr, Smokey. :D

Answer 10

hewwo owo

Answer 11

elsha i clearly know there is stuff in the lesson it doesnt change i need help Understading it and being able to do it e.e

Answer 12

Hi smokey can you help me out like give me some questions i can do my best to answer

Answer 13

Things im not good at that i need help with is f(g(x))

Answer 14

Hey sure thing. When you're doing f(g(x)) problems, you wanna take the 'x' in the 'f(x)' equation and replace it with the entirety of the 'g(x)' equation.
So, like, if f(x)= x^2 and g(x) = x + 1,
f(g(x)) = (g(x)^2), or (x+1)^2

Answer 15

ok

Answer 16

that makes it look less confusing could you give me a question and ill answer it

Answer 17

Yeah sure thing, try this one
\[f(x)=\frac{ 2 }{ x }\]
\[g(x)=4x ^{2}\]
\[f(g(x))=?\]

Answer 18

\[f(g(x))=\frac{ 2 }{ 4x^2}\]

Answer 19

?

Answer 20

Yeah, exactly. You can also simplify a bit more, since the numerator and denominator have a common factor of 2

Answer 21

._.

Answer 22

how do i do dat

Answer 23

im not good at fractions xD

Answer 24

Oh, see, 2/4 is equal to 1/2 when simplified, so 2/4x^2 would be equal to 1/2x^2

Answer 25

ohh ok

Answer 26

give me another question i wanna try it andsee if im getting better

Answer 27

Sure thing, try this one
\[f(x)=\sqrt{x}\]
\[g(x)=9x ^{2}\]
\[f(g(x))=?\]

Answer 28

._.

Answer 29

\[f(g(x))=\sqrt{9x^2}\]

Answer 30

?

Answer 31

am i right

Answer 32

Yeah, you got it. You can still simplify the expression a bit. Keep in mind that the part inside the square root is a perfect square.

Answer 33

\[g=\frac{ 3 }{ f }\]

Answer 34

Like this ^

Answer 35

I'm not really sure what you mean by that?

Answer 36

i tried to simplifying it more like you said

Answer 37

and im alittle confused i put this in a calculator \[f(x)=\frac{ 2 }{ x } , g(x)=4x^2 \]
and it equaled \[f(4x^2)=\frac{ 1 }{ 2x^2}\]
Is that still correct

Answer 38

Oh, yeah, that's definitely correct, since 2/4 is equal to 1/2, right?

Answer 39

yes

Answer 40

Yeah definitely. Remember, how 2/4 is equal to 1/2?

Answer 41

yes

Answer 42

Yeah, so 2/4x^2 = 2/4 * 1/x^2
= 1/2 * 1/x^2
=1/2x^2

Answer 43

ohhh ok what about the f(4x^2) = is that the same thing as f(g(x))=

Answer 44

Yeah, that's right. Since g(x)=4x^2, you can replace g(x) with 4x^2

Answer 45

ok

Answer 46

ok i need help with this its a question from the review i did but didnt get it right and i need help so i can understand it and get it right next time

Answer 47

^the question ill put what it says here

The number of fish (f) in a fish tank increases when the number of algae blooms (a) decreases. Write the correct equation for this scenario, and solve for the number of fish when there are 4 algae blooms.

Answer 48

Ok, I see.
So, f = 1a makes sense, when a=10 and f=10
But then, another data point says that when a=25, f=4
So, from this, we know that f can't be equal to a all the time. Does the other option make sense?
f = 100/a

Answer 49

wait so f=1a but A=10 and f=10 so it would look like 10=110?
then there is a=25 f=4 so it would look like 4=125?

Answer 50

Oh I think 1a means 1*a, or just 'a', for simplicity's sake.

Answer 51

so 10=10 and 4=25

Answer 52

Right, but only the first of those makes sense. 4 can't be equal to 25, see.
Now, if we try the other option, f=100/a
10 = 100/10, which is true
25 = 100/4, which is true
So that equation represents the pattern we see better

Answer 53

*gasp* WAIT DOES THAT MEAN THE ANSWER IS f= 100 over a = f = 25

Answer 54

Oops, I meant 4=100/25, but you understand

Answer 55

Yeah, that's right. If you use that equation, then f would be 25 when a is 4, for just the reason you just described

Answer 56

ok i pretty much got the answer bc i knew it was 100 over a and then f=25 so it wouldnt be D were f= 400 Ok im understanding more now

Answer 57

can you give me another question

Answer 58

Yeah sure thing uhhhh
Hey, here's a guide with a bunch of practice problems at the bottom. You can practice with that.
http://www.mesacc.edu/~scotz47781/mat120/notes/composition/composite_functions_intro.pdf

Answer 59

^ Wisdom