Linear+Systems-Target+C-All+Systems+Go-Investigations

**Target 5C: Write and Solve a System of Linear Equations or Inequalities**
System of Potatoes

**ACT 1**
How much does each type of potato weigh? media type="youtube" key="gUl3NA2vvmY" width="420" height="315"

What is your best guess?

ACT 2
What other information is needed? .

ACT 3
What is your solution?

Explain how you solved the problem using graphing, substitution or linear combinations.

Adapted from work by James Cleveland http://rootsoftheequation.wordpress.com/2012/03/06/3-acts-potatoes/

Which Plan?

Southwest Realty company has hired you as a consultant about the purchase of iPhones and cell phone plans. They have received the following information from two major telecommunications companies. Also included is the monthly GB data use of a typical realtor in their agency. (Note: There is a lot of information here that is NOT needed. Part of the problem is that you have to find the relevent information to the question)

1. What would the cost of the purchase of a iPhone with a two year contract be and a 2 GB data plan be for three months for AT&T and Verizon?

2. What would the cost of a the purchase of an iPhone with no contract and a 1 GB of data plan be for 10 months for AT&T and Verizon?

3. Are the plans ever the same price for a two year contract and the purchase of a phone?

4. Are the plans ever the same price with no contract and the purchase of a phone?

5. Which plan and phone purchase would you recommend to Southwest Realty? Justify your recommendation.