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Mathematics 12 Online
OpenStudy (anonymous):

I need help with a few Algebra 1 Q's in preparation for a test. It will take about 10 mins of your time, and I will fan, medal, and give a positive testimonial to anyone who is willing to help me out.

OpenStudy (anonymous):

i will try my best :)

OpenStudy (anonymous):

Thank you! Give me a few seconds.

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

1st Q: http://prntscr.com/7a1nki

OpenStudy (anonymous):

If you don't know it, it's fine, we can move on if you'd like :)

OpenStudy (anonymous):

I'm in algebra 2 as of now and I'm not sure of the answer lol

OpenStudy (anonymous):

Okay! No problem. (I'm in Algebra 1) Let me get out the next Q.

OpenStudy (anonymous):

k

OpenStudy (anonymous):

http://prntscr.com/7a1pxw

OpenStudy (anonymous):

It would be A. you want an explanation?

OpenStudy (anonymous):

Yes, please :)

OpenStudy (anonymous):

ok so the shaded part of the graph would all be correct answers

OpenStudy (anonymous):

and A is the only ordered pairs within the shaded part

OpenStudy (anonymous):

Oh okay, so by trial and error, one can get the correct answer easily. Thank you!

OpenStudy (anonymous):

np

OpenStudy (anonymous):

Q.3: http://prntscr.com/7a1r4w Are they asking for the rate of change?

OpenStudy (anonymous):

I don't think so

OpenStudy (anonymous):

im pretty sure its C.

OpenStudy (anonymous):

Why is that?

OpenStudy (anonymous):

because when i plugged in the numbers into the equation they equaled eachother

OpenStudy (anonymous):

5 is plugged into h(5) =

OpenStudy (anonymous):

That's a great way to solve this one! so if I plugged in 0 for x, I would get 5/1 = 5 and if h(x) = 5, then the equation is true. Thanks

OpenStudy (anonymous):

and 0 is plugged into x

OpenStudy (anonymous):

yep :)

OpenStudy (anonymous):

http://prntscr.com/7a1ssa I was thinking it's either the peak or the left part

OpenStudy (anonymous):

(Those are the only parts that make the function non-linear)

OpenStudy (anonymous):

So it's either A or B

OpenStudy (anonymous):

But then C also describes the peak

OpenStudy (anonymous):

huh

OpenStudy (anonymous):

or no sorry not C

OpenStudy (anonymous):

Precisely... but they're asking for an interval, so it can't be C

OpenStudy (anonymous):

Ya its a or b im not sure which one

OpenStudy (anonymous):

I think it's A mainly because the function would have been in a triangle shape if not for the discontinuation of the left part.

OpenStudy (anonymous):

ya i was just about to say that as well

OpenStudy (anonymous):

i would go with A

OpenStudy (anonymous):

Okay! http://prntscr.com/7a1uuj (Let me know when you're sick of answering my Q's) :)

OpenStudy (anonymous):

so 24 = x/3

OpenStudy (anonymous):

then you would do inverse operations

OpenStudy (anonymous):

and get x = 72

OpenStudy (anonymous):

Okay, like cross-multiplication. So it would be 24 * 3 and x * 1?

OpenStudy (anonymous):

ya that would work too

OpenStudy (anonymous):

72/x?

OpenStudy (anonymous):

it would be 24 * 3 = x * 1

OpenStudy (anonymous):

So 72 = x! Meaning answer is D?

OpenStudy (anonymous):

you forgot the equal sign

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

What is the pattern of this sequence? http://prntscr.com/7a1wqe

OpenStudy (anonymous):

Do you have any ideas what the pattern might be?

OpenStudy (anonymous):

Yes: from -2 to 3 it goes through an interval of 3. From 3 to 1 it's 2, from 1 to 4 it's 3, from 4 to 5 it's 1 and from 5 to 9 it's 4. I don't see an ongoing pattern.

OpenStudy (anonymous):

yeah im not sure on this one sorry:(

OpenStudy (anonymous):

No problem! :) Next one: http://prntscr.com/7a1z2r

OpenStudy (anonymous):

I think it's A.

OpenStudy (anonymous):

Yes it is :)

OpenStudy (anonymous):

(5, 40) because x represents hours (independent value) it's all about interpreting the graph into a real world problem.

OpenStudy (anonymous):

http://prntscr.com/7a1zt7 Disregard the answer I chose, it was by accident.

OpenStudy (anonymous):

Yep and might I say u seem really smart btw you type lol

OpenStudy (anonymous):

so your in like AP algebra 1 im guessing?

OpenStudy (anonymous):

There isn't an AP Alg 1.. is there? I'm in honors

OpenStudy (anonymous):

there is in some schools but I think its A but im not sure

OpenStudy (anonymous):

I understand :)

OpenStudy (anonymous):

Next question? or are we still on this one?

OpenStudy (anonymous):

I believe that the answer to the one I just asked is either A or B

OpenStudy (anonymous):

Oh it's above :)

OpenStudy (anonymous):

Now that I look at it more I dont think its A because its saying its greater than or equal to 24,000 when it should be it's less than or equal to 24,000 right?

OpenStudy (anonymous):

And B would eventually exceed 24,000 if im not mistaken

OpenStudy (anonymous):

Since the value of the car is a decreasing exponential function, I agree with your points.

OpenStudy (anonymous):

I think it is C. actually

OpenStudy (anonymous):

But wouldn't the 'y' represent range instead of domain?

OpenStudy (anonymous):

thats also what i was thinking as well but its the only one that makes sense i think

OpenStudy (anonymous):

or no cause its also greater than or equal to

OpenStudy (anonymous):

either there's a mistake with the question or we are missing something lol

OpenStudy (anonymous):

Hmm.. you're right. Perhaps this Q doesn't have a correct answer at all. There are a couple of other Q's on this homework that are inaccurate, too.

OpenStudy (anonymous):

oh ok then that must be it

OpenStudy (anonymous):

http://prntscr.com/7a2622 (Again disregard the answer)

OpenStudy (anonymous):

Ya its C

OpenStudy (anonymous):

since its asking for the Y values (or range values)

OpenStudy (anonymous):

This was such an easy question. I guess the concept of domain and range to me isn't very clear but I understand now. (Silly me)

OpenStudy (anonymous):

lol

OpenStudy (anonymous):

:P

OpenStudy (anonymous):

http://prntscr.com/7a2796 http://prntscr.com/7a27c5 (It wouldn't fit into my screen)

OpenStudy (anonymous):

Its A. since it said constant rate that means it has to be a straight line and also it has the ordered pair (5, 300) :)

OpenStudy (anonymous):

Right. It's linear.

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

Are you still willing to help? I know that your time is precious.

OpenStudy (anonymous):

Yes I am still willing to help i just do my homework while helping others :)

OpenStudy (anonymous):

I should try that strategy, too. Just know that even though we don't know each other, I can tell you're very kind-hearted taking the time out of your day to serve others for nothing much in return. It's truly appreciated.

OpenStudy (anonymous):

Thank you for that and no problem :)

OpenStudy (anonymous):

With that said.. http://prntscr.com/7a28mg

OpenStudy (anonymous):

It is A.

OpenStudy (anonymous):

Because the x-intercept is when y = 0, right?

OpenStudy (anonymous):

And vice versa for the y-intercept.

OpenStudy (anonymous):

yes thats correct

OpenStudy (anonymous):

Or its B sorry

OpenStudy (anonymous):

I'm pretty sure this is correct, but just in case I wanted to check it with you. And why would it be B?

OpenStudy (anonymous):

because when you set y equal to zero then that goes away leaving you with x = 12

OpenStudy (anonymous):

because -6(0) = 0

OpenStudy (anonymous):

Right. Sorry I didn't see that error either.

OpenStudy (anonymous):

http://prntscr.com/7a2afg

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