Tutor.com Linear Functions Session

Nov. 6, 2013

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Session Transcript - Algebra - College Algebra, 11/1/2013 6:56PM - Tutor.comSession Date: 11/1/2013 6:56PM
Length: 15.8 minute(s)
Subject: Algebra - College Algebra


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Darwin (Customer)
[00:00:00] *** The student has 256 minutes remaining. ***
[00:00:00] Find the largest of three consecutive odd integers whose sum is 273 The largest of the three integers is
[00:00:08] hello

Kathy W (Tutor)
[00:00:12] Welcome to Tutor.com ! Let's get started.
[00:00:18] Have you worked with these type of problems before?

Darwin (Customer)
[00:00:22] Yes

Kathy W (Tutor)
[00:00:39] Would you like to solve the problem while I check your work or walk you through it?

Darwin (Customer)
[00:00:40] I know that we need to find 3 consecutive numbers that equal
[00:00:50] 273\
[00:00:53] Yes please
[00:01:01] I need a jump

Kathy W (Tutor)
[00:01:22] Ok, let's start with defining the variables
[00:01:28] are you familiar with how to do that?

Darwin (Customer)
[00:01:54] umm. You mean x y and so on

Kathy W (Tutor)
[00:02:15] yes, however in this problem, we will have to do it all in terms of one varibble
[00:02:21] so why don't i start us off
[00:03:05] does that make sense?

Darwin (Customer)
[00:03:08] yes

Kathy W (Tutor)
[00:03:23] then in terms of x, we'll define the next consecutive 2 odd integers
[00:03:33] so for example, let's say x was 3

Darwin (Customer)
[00:03:40] x+1 and x+2

Kathy W (Tutor)
[00:03:46] close
[00:03:50] but because they are add
[00:04:08] we'd have to add 2 each time
[00:04:16] for example 3, 5, 7
[00:04:21] are 3 odd integers
[00:04:28] and they differ by 2

Darwin (Customer)
[00:04:28] ok
[00:04:32] yes

Kathy W (Tutor)
[00:04:47] so can you define the next two integers?
[00:04:53] consecutive odd integers?
[00:05:00] using x

Darwin (Customer)
[00:05:25] (x+2)x+4

Kathy W (Tutor)
[00:05:33] very goo
[00:05:36] very good

Darwin (Customer)
[00:05:38] Really
[00:05:39] Nice

Kathy W (Tutor)
[00:05:45] so we'll put that on the board

Darwin (Customer)
[00:05:49] ok

Kathy W (Tutor)
[00:06:37] alright, now we just have to set up the problem

Darwin (Customer)
[00:06:46] ok

Kathy W (Tutor)
[00:06:52] since the sum equals 273
[00:07:01] what operation do we need to use?

Darwin (Customer)
[00:07:35] factoring
[00:07:38] ?

Kathy W (Tutor)
[00:07:52] not factoring, what does sum refer to?

Darwin (Customer)
[00:07:59] addition

Kathy W (Tutor)
[00:08:03] RIGHT!!
[00:08:16] so we need to add all 3 together to equal 273
[00:08:23] so can you write that on the board for us?

Darwin (Customer)
[00:08:53] would it be x+x+2+x+4=273

Kathy W (Tutor)
[00:09:00] PERFECT!!

Darwin (Customer)
[00:09:03] ok

Kathy W (Tutor)
[00:09:48] GREAT!! now, we solve for x

Darwin (Customer)
[00:11:09] 89

Kathy W (Tutor)
[00:11:11] Great JOB!!

Darwin (Customer)
[00:11:15] Thank you.

Kathy W (Tutor)
[00:11:18] so that's the first
[00:11:19] one
[00:11:24] but we need the largest one

Darwin (Customer)
[00:11:42] 89+4=93

Kathy W (Tutor)
[00:11:51] perfect!!

Darwin (Customer)
[00:11:53] ok

Kathy W (Tutor)
[00:11:55] and to double check it
[00:12:07] you just add them all together to see if you get 273
[00:12:39] Do you have any questions about anything we went over today?

Darwin (Customer)
[00:12:41] I did
[00:12:46] Thank you.

Kathy W (Tutor)
[00:13:02] Thanks for using Tutor.com. Please fill out the survey as you leave so we can learn how we can better help you in the future! 
[00:13:29] You're welcome and have a great day!!

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