Question

can anybody help with algebra!

Answer 1

http://ocas.pearsonschool.com/ph/cd/0-13-365946-8/index.html?pageid=349&token=53616c7465645f5f81d8086b402612535c05bb36548c352efd4d42aa1f0bb0bdac910c59b0106743211d5f73e68757a01aa7c21cd8986203d225aa23afe42a72ef07f866009a4e4b

Answer 2

page 348 task 3 only

Answer 3

It gave me a blank blue page, sorry can't help because I can't see the work.

Answer 4

What are you having trouble with on task 3?

Answer 5

i dont get it at all but can you see it or is it also blank

Answer 6

I can see it; do you need help with scatterplots? It's basically a regular graph only without the lines.

Answer 7

i need help with all of it i already finished task 1,2 and am having trouble with task 3

Answer 8

i need to answer a,b and c on task 3

Answer 9

Okay so you need to graph a scatterplot of the table. I'll assume you know how to draw the foundations of a graph, so I'll skip to the points. Your x axis will be your months, while your y axis will be your sales. Make the axes so that the x axis goes from 0 to 20, and y axis goes from 0 to 50 (or more if you think you'll need it). Now all you have to do is plot the points in the table. The first piece of data is "month: 2, sales: 3", so plot (2,3). Do this for all of them, and that should be it for part 1.

Answer 10

Now for part 2, we need to find two equations that describe this scatterplot (essentially, we want to write the pattern down in the form of an equation). The goal is to relate the x points with the y points. That means we need to find how the months and sales are related. Unfortunately, I am not seeing any patterns on first sight, so give me a few minutes.

Answer 11

This is a tricky one; I think you may need several equations since there aren't any apparent relationships between the two consistently throughout the points. If anyone else can see it, then please go ahead and help her out. I'm sorry >.< But the second part of part 2 is simple. The domain and range of the graph/table is just the range of values that is possible. It is possible for the "months" value to be any whole number from 0 to infinity, while for the "sales" value it is the same (0 to infinity).

Answer 12

ok thank you for helping ill see if i can finish the rest

Answer 13

And part 3 can only be answered using the equations from part 2 unfortunately =/ I'll keep looking at it, and maybe I'll see something after a while. Hope I was able to help somewhat!

Answer 14

what methods of approximating the table have you covered?

Answer 15

there is something called a least squares, or linear regression, model .... which may or maynot be beyond the scope of the text

Answer 16

I just looked at the material, and as best I can tell, they expect an "eyeball" estimate.
that is how you can get two different trend lines (I think?)

Answer 17

they also mention using a calculator to find the "best fit" line... so that could be what they want

Answer 18

this is so hard

Answer 19

Okay so after thinking about it for some time, I am guessing that they want two separate equations, mostly because there are two separate patterns in the sales values. For the first 5 sales values, the pattern is: starting from 3, +2 -1 +2 -1. Then the second half uses a different pattern: starting from the last value of the last pattern (5), +6 +4 +6 +4 +6... and so on. I don't know if there is a simple equation that shows this, but those are the trends that I saw. If we use that trend, we can also guess the sales value for the 24th month. The table ends at month 20 and is using increments of 2, so we need to find the second sales value starting from month 20: (20, 32), (22, 36), (24, 40). So the estimated sales value at month 24 is 40. To find the value at month 5, we just have to find the average between months 4 and 6, which would be 4.5. That's about as much as I can help I think, so I hope all that helps.

Answer 20

thank you it does