Monday, May 22, 2006

James's Growing Post

Due Thursday, May 23

Question #1: Solve all 3 parts of the problem below.



Jack collects baseball cards. Jack has 180 baseball cards in his collection. At the end of each month Jack buys 25 baseball cards to add to his collection.


a) Create a T-Chart showing how many baseball cards Jack has at the end of the next 4 months.


b) Create an algebraic formula based upon the problem above.

~x=25y~


c) If Jack just turned 8 years old this month and Jack continues to buy the same amount of baseball cards each month, how many baseball cards will Jack have when he turns 12?

~When Jack turns 12, he will have 1380 cards~

Question #2: Use the chart to figure out the questions below.


Jackie is planning on having a pizza party with some of her friends. She is trying to figure out how many pizzas to order. She knows that each pizza has six slices of pizza.


a) If Jackie thinks that there will be four people at the party (counting herself) how many pizzas should she order?

~She should order 2 pizzas.~

b) If two more people show up at the party how many more pizzas does she need to order?

~She needs to order 1 more pizza, making 3 in total.~

Question #3: Answer the questions below based on this information.

Kathy has $20 in her savings account. Each month she adds another $15 to her savings account. In order to calculate how much money she will have in one year Kathy has created this algebraic formula: 20 + 15n = Savings amount.

a) Calculate how much money Kathy will have in one year.

~Kathy will have $200 in one year.~

b) Suppose Kathy counted wrong and she really has $25 in her account instead of $20. Change the algebraic formula to reflect this miscalculation.

~25 + 15n = Savings amount~

Question #4: Solve the following equations. Show all of the steps that are needed.

a) 3n + 4n + 7 = 2n + 12

~7n + 7 = 20 + 12~

~7n - 2n + 7 = 12~

~5n + 7 = 12~

~5n = 12 - 7~

~5n = 5~

~n = 5~

b) 8n - (4 + 9) = 11

~8n - (13) = 11~

~8n = 11 + 13~

~8n = 24~

~n = 24 ÷ 8~

~n = 3~

c) (8 - 3)n + 7n + 8 = 4n + 40

~5n + 7n + 8 = 4n + 40~

~5n + 7n - 4n = 40 - 8~

~8n = 32~

~n = 32 ÷ 8~

~n = 4~




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2 Comments:

At 3:22 PM, Blogger Mr. Reece said...

great work james. Your formula in 1b needs some some. Plus tell me what the variable stands for.

How did you get the answers for 2a and 2b?

Questions 4 look great, but they are to be included in this week's growing post.

 
At 1:24 PM, Blogger Mr. Reece said...

James you didn't take advantage of making any additions to this post. Your mark is 15/17

 

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