Pre-Algebra Monday September 2.

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Presentation transcript:

Pre-Algebra Monday September 2

Learning Target I will be able to recognize and represent proportional relationships between quantities by using rate tables to find missing values.

What did we do last time? In Problem 2.1 how did we determine which table we would choose, the one with 3 pizzas or the one with 4? Was that the same strategy that we used for deciding which juice mix was more orangey?

Vocabulary Rate: A comparison of two quantities measured in different units.

Problem 2.2 Julia is in charge of ordering pizzas for a camp dinner. She wonders whether to order the pizzas from Royal Pizza or Howdy’s Pizza. Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 A You can use the ads to find the cost for any number of pizzas you want to purchase. One way to find the costs is to build a rate table. Using the lab sheet I have distributed, complete the table with the prices for each of the numbers of pizzas shown. Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 A Using your completed table answer the following questions: 2. How much will 53 pizzas from Royal cost? 3. How much will 27 pizzas from Howdy’s Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 A Using your completed table answer the following questions: 4. The campers consider their budget. How many pizzas can they buy from Royal with $400? What if they only have $96? Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 B If you know the price of one pizza, how can you find the price of additional numbers of pizzas? For each pizza place, use your strategy from part (1) to write an equation for the total price P for any number of pizzas n. How does your equation help you solve problems such as those in Question A, part (4)? Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 C Howdy’s listed price is valid only if you pick up the pizza. If you request delivery, they charge a flat $5 fee for any number of pizzas. Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 C 1 a. Complete the table using the lab sheet provided. Find the the prices for Howdy’s pizzas if you pick up and if they deliver. Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 C 1 b. Describe the patterns you see in the table. Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 C 1 c. In Question B, part (2), you wrote an equation for the cost of the pizza at Howdy’s. How does the information represented by the equation show up in the table? Can we use a similar strategy to compare the amount of pizza?

Problem 2.2 C 2 a. On the coordinate plane provided to you, plot the data for Howdy’s prices with no delivery fee and with the delivery fee. Can we use a similar strategy to compare the amount of pizza?

Rate your learning I will be able to recognize and represent proportional relationships between quantities by using rate tables to find missing values.

Answers for Problem 2.2 A

Answers for Problem 2.2B

Answers for Problem 2.2C 1

Answers for Problem 2.2C 2