Bell Ringer12-14-10

1. Create a table and write an expression for the sequence 6, 13, 20, 27,….

Solve2. -3x = 183. 2x + 5 = 174. -2 + 4x = 105. You go to the store to buy a $20 present

for Mrs. Cook. The tax rate is 8%. The total comes out to $36. Will you pay this? Explain.

1. Create a table and write an expression for the sequence 6, 13, 20, 27,….

7n - 1

7(1) - 1 7(2) - 1 7(3) - 1 7(4) - 1 7 - 1 = 6 14 - 1 = 13 21 - 1 = 20 28 -

1 = 27

Position (n) 1 2 3 4

Term 613 20 27

-3x = 18

x = -63. 2x + 5 = 17

2x = 12

x = 64. -2 + 4x = 10

4x = 12

x = 3

3 3

5 5

2 2

2 2

4 4

5. You go to the store to buy a $20 present for Mrs. Cook. The tax rate is 8%. The total comes out to $36. Will you pay this? Explain.

Absolutely NOT!

A total of $36 means you are paying $16 in tax for a $20 item. This is way too much. It should only be $1.60 in tax. Instead of paying .08 per dollar, you were charged .80 per dollar.

Quiz12-14-10

Tara bought three DVDs at the same price and paid $4.07 in

sales tax. She spent $54.92 in all. How much did each DVD

cost?

How much was each DVD?

To find the total spent on the DVDs before tax, I subtracted the amount of tax from the total paid. I divided this amount by 3 (the number of DVDs) to calculate the cost for one DVD.

Tara bought three DVDs at the same price and paid $4.07 in sales tax. She spent $54.92 in all. How much did each DVD cost?

Each DVD was $16.95.

3 DVDsTax: $4.07Total: $54.92

85.50$07.4$92.54$

DVD/95.16$3

85.50$

Speed Test1. Get out a dry erase marker.2. You have 1 minute to complete as many problems as you can.3.We will grade in 1 minute.4. Graph your results. Keep the graph in your notebook.5. We will do this every day.

Problem of the Week & Word Problem

#3-41. You have 5 minutes to work on the

problem of the week and word problem.

2. The problem of the week must follow the Read, Think, Solve, Justify format.

3. When you are finished, turn them in.4. They are due Friday.

Accelerated Math

1. You have 10 minutes to work on your accelerated math.

2. Work out every problem.3. When you complete the practice

problems, bring them to me. If you have worked them all, I will allow you to submit your answers.

4. This is INDIVIDUAL…NO TALKING!

Class Work Perfect Squares Chart

Create the Perfect Squares ChartFill in the Dimensions, Square, and

Square Root ColumnsWe will go over this in 15 minutes

Class Work: Perfect Squares & Irrational

NumbersYou need your notes. Title the notes:

Perfect Squares & Irrational Numbers

I will check your work at the end of class.

Perfect Squares

1. Calculate the square of 7

2. Calculate the square root of 81.

3. ?121

4972

981

11121

Irrational Squares

4.

This is an example of an irrational number. The answer will not be a whole number.

?5

Irrational Squares

?5 Place the irrational square between two consecutive perfect squares.

954

Irrational Squares

Place the irrational square between two consecutive integers.

954

352

Irrational Squares

Determine the range of answers.

352

Between 2 and 3

Go to the Tenths place

Range = 2.1 – 2.9

Irrational Squares

Determine which perfect square the irrational square is closest too.

352 954

1 4

5 is closer to 4, so the square root of 5 is closer to 2.

Range = 2.1 – 2.9

Irrational Squares

Guess and check(You want the answer that is

closest to the irrational square)

352

Since it is closer to 2, we are going to start on the low end.

Range = 2.1 – 2.9

What # when multiplied by itself = 5?

Irrational Squares

352 Range = 2.1 – 2.9

41.41.21.2 84.42.22.2 29.53.23.2

I have found the number right above and below 5.

Irrational Squares

352 84.42.22.2 29.53.23.2

Find the number closest to 5

16.084.400.5 29.000.529.5

Which number is closest to 5?

2.25

Irrational Squares

?39 Place the irrational square between two consecutive perfect squares.

493936

Irrational Squares

Place the irrational square between two consecutive integers.

493936

7396

Irrational Squares

Determine the range of answers.

7396

Between 6 and 7

Go to the Tenths place

Range = 6.1 – 6.9

Irrational Squares

Determine which perfect square the irrational square is closest too.

7396 493936

3 10

39 is closer to 36, so the square root of 39 is closer to 6.

Range = 6.1 – 6.9

Irrational Squares

Guess and check(You want the answer that is

closest to the irrational square)

7396

Since it is closer to 6, we are going to start on the low end.

Range = 6.1 – 6.9

What # when multiplied by itself = 39?

Irrational Squares

7396 Range = 6.1 – 6.9

44.382.62.6 69.393.63.6

I have found the number right above and below 39.

Irrational Squares

Find the number closest to 39

69.000.3969.39 56.044.3800.39

Which number is closest to 39?

2.639

7396

69.393.63.6 44.382.62.6

Irrational Squares

?115 Place the irrational square between two consecutive perfect squares.

121115100

Irrational Squares

Place the irrational square between two consecutive integers.

1111510

121115100

Irrational Squares

Determine the range of answers.

Between 10 and 11

Go to the Tenths place

Range = 10.1 – 10.9

1111510

Irrational Squares

Determine which perfect square the irrational square is closest too.

15

6

115 is closer to 121, so the square root of 115 is closer to 11.

Range = 10.1 – 10.9

1111510 121115100

Irrational Squares

Guess and check(You want the answer that is

closest to the irrational square)

Since it is closer to 11, we are going to start on the high end.

Range = 10.1 – 10.9

What # when multiplied by itself = 115?

1111510

Irrational Squares

Range = 10.1 – 10.9

49.1147.107.10 64.1168.108.10

I have found the number right above and below 115.

1111510

Irrational Squares

Find the number closest to 115

64.100.11564.116 51.049.11400.115

Which number is closest to 115?

7.10115

1111510 49.1147.107.10 64.1168.108.10

Class Work Solve

84.5

11.4

193.3

41.2

36.1

27.10

81.9

205.8

152.7

98.6

38.15

54.14

144.13

75.12

62.11

64.20

43.19

208.18

146.17

10.16