Pg. 60 pick 6 GI, 1 OE1.) 152 2.) 10 3.) 6

4.) 729 5.) 0.5 6.) 1

7.) 21 8.) 128 9.) 12

10.) 408 11.) 12 12.) 11

13.) 15

14.) a. Mario’s account: I=7t, Andy’s account: I=4.5t

b. Mario’s Andy’s

c. Mario’s account begins with $10 less than Andy’s account. The tables show that after the 4th year Mario’s account has earned $10 more in interest than Andy’s

15.) a. If s feet is the length of the side of the square dance floor, then the length and width of the rectangular dance floor are (s+15) feet and (s-10) feet. The difference is 25 ft.

b. 45 ft, 20 ft. Length plus width equals ½ the perimeter, so (s-10) + (s+15) = ½ (130) or 2s+5=65

c. 900 tiles. 20 ft x 45 ft = 900 ft. squared.

T(yrs) 1 2 3 4 5

I ($s) 7 14 21 28 35

T(yrs) 1 2 3 4 5

I ($s) 4.5 9 13.5 18 22.5

Pg. 62 #1-13

Lesson Opener

2-1 The Real Number Line• Real Numbers = the set of all positive and

negative numbers and zero– The point labeled zero is the ORIGIN– Negative numbers = the points to the left of zero– Positive numbers = the points to the right of zero– Real number line:

• -5 -4 -3 -2 -1 0 1 2 3 4 5 6

• Plotting points = putting a dot on the number line where the given number would be

• Opposites = two points that are the same distance from the origin but on opposite sides– Ex: Opposite of 3 = -3 Opposite of –8 = 8

• Absolute value = the distance between the origin and the point representing the real number– Symbol = – Ex:

• Counterexample = you come up with one example to prove that a statement is false

a

8 8 8 8 -a a

PracticeGraph the numbers on a number line. Then

write two inequalities that compare the two numbers.

• 1.) 3, -5, 0

• 2.) -0.1, -1.1, -1

• 3.) 1 3 1, ,

2 4 4

Practice 2Find the opposites of the number

1.) 3.8 2.) -16 3.) 0

4.) -2.04 5.) 6.)

Evaluate the expression by finding absolute value

13

62

3

11.) 12 2.) 4.1 3.) -

5

4.) -103 5.) 7.8 6.) -6.1 6.01

REAL NUMBERS

RATIONAL NUMBERS =any # that can be written as a fraction

or RATIO

INTEGERS =positive and negative

whole #s

WHOLE #s=only positive

Summary• The set of numbers consisting of the positive numbers,

the negative numbers, and zero are called ___________ ___________.

• The point labeled zero on the number line is called the _______________.

• You can graph or plot points on a ___________ ______________.

• The distance between the origin and the point representing the real number is called the___________ ___________.

• Two points that are the same distance from the origin but on different sides are called___________.

Check Yourself

Pg. 67-70 # 14-50 e, 59, 61-62