Inequalities help

Hi Guys!

Here are some links to help you with inequalities. Leave me a comment/question about anything.

http://www.purplemath.com/modules/ineqgrph.htm

http://www.youtube.com/watch?v=0X-bMeIN53I

http://www.mathwarehouse.com/algebra/linear_equation/linear-inequality.php

Then, go to study island.

more links

http://www.purplemath.com/modules/strtlneq.htm

http://www.youtube.com/watch?v=Zj-9Zc9yKYU

http://www.glencoe.com/sec/math/prealg/prealg05/study_guide/pdfs/prealg_pssg_G062.pdf.

Intro to Linear functions and equations

Hi Guys!

We are starting a new unit involving many important objectives based around linear equations and functions. You will learn how to find the slope of a line, use slope-intercept form, find the equation of a line, graph linear and quadratic functions, and how to use direct and inverse variation to solve problems.

But for today, we are going to focus on using two variables in equations. First, click on this link:
http://home.sprynet.com/~smyrl/EQ6.HTM

Notice, they mention "explicit form," this is what we will refer to as slope-intercept form.

Next, read over pages 349 and 350 in your textbook. Then you can try a couple problems and post this on your blog. Do this by writing the equation for y in terms of x (ex. 3x + y = 7, so y = 7 -3x). Try #13-16 on pg. 351.

Next, read pg. 353 and 354 from your textbook. Define all bolded words (skip abscissa) in your notebook (or on your blog if you want to) from those pages using this website, http://www.amathsdictionaryforkids.com/

Go onto Study Island when you finish.

More percents

Directions: Go to this site to answer questions. You can do this on paper OR on your blog.
http://factfinder.census.gov/home/en/kids/funfacts/funfacts.html
Click on Ohio to help you find the answers.


1. Find the most current U.S. population of females or males. (2000.)

2. What was the U.S. population of females or males in 1990?

3. Find the percent increase/decrease.


4. Based on the percent increase/decrease, with a population of 1000 people, how many females or males would there have been five years ago?



5. Find the percent of increase or decrease for these categories:
a) under 5 years old




b) between 10-14 years old




c) over 85 years old

Percents

Hi Class!

We have been learning and working with percents in equations and proportions. Here is your assignment for today:

You have just graduated college and have found your dream job as a ________ (insert job here - i.e. teacher, writer, actor, pro football player, doctor, nurse, etc.)! Let's pretend you will be making around $1200 per month, depending on overtime, bonuses, etc. Now here is the deal - you need to make sure you manage your money wisely. Answer the following questions:

1) Your rent plus utilities (gas, water, internet, phone, etc.) is $540 a month! What percentage of your monthly income is this?

2) You spend about 6% of your income per month on your cell phone bill! What amount is this?

3) You usually spend around $200 per month on groceries. Find this percentage.

4) You spend about $40 per week on gas filling your car's gas tank! What percentage of your monthly income is spent on gas?

5) You like to use the remaining money and split it - using 60% on entertainment (movies, shopping, etc.) and putting the other 40% in savings. About how much money is spent on entertainment and how much is put in savings?

This should be a post on your blog. When you finish, move onto Study Island. :)

More polynomials...

Explain (could be in step form) how to factor the following polynomials. (2) = squared

1) 2x(2)+ 10x -24
2) 4x(2) + 20x + 25
3) x(2) - x – 12
4) 9x(2) - 81

For a challenge...

We have been working with polynomials the past couple weeks. Use what you know about multiplying polynomials to solve this problem:

Pretend you want to fit a perfectly shaped circular rug into your perfectly square room. All you know right now is that the radius of the rug is "r" feet long. 1) Find the area of the rug, 2) the area of the room and then 3) the area of the room that won't be covered by the rug. (hint -draw a picture!)

Then, when you finish -complete any study island assignments that you need to do!

Happy Thanksgiving!

http://www.theholidayzone.com/thanks/puzzles/Thanksgiving_Feast.html