1

16

1

250

33

ky k yx

x= � =

4k =3

4k

x=

3( ) 4 Power Regressionbf x ax x-= � �

300k =2

300I

d=

( ) ( )( ) 12 2 8 2f x x x x= - -

(0, 4)

3Maximum 67.6 inchesﾻ

( ) ( )( ) 3 2 1f x w w w= - - 2 2 6

2 6 2

3

l w

l w

l w

+ ﾣ-ﾣ-ﾣ

2,3, 3x -ﾹ12

3

x

x +0, 6, 3x - -ﾹ

( ) ( )2 3

3 6

x

x x

-+ +

even multiplicity

( ) ( ) ( ) ( ) 41( ) 2 3 4 2

8f x x x x x= + - - -

3, 3, 15x - -ﾹ( )3 4 7

15

x

x

-+

3x ﾹ ﾱ5x =

35

30

6

Positive on both sides which means the leading coefficient of the even degree function is positive!

4x =

f

.18k ﾻ

It will be safe in 9 days

5

2x

-ﾹ

1x = -

Because equivalent fractions were formed using the Identity Property of Multiplication which states that anything times one is itself!

8400v

p=

We already did this problem –> 2 hours

( ) ( )( ) 6 2f x x x x x width= - - ( =

( )2,63Max 17 feetﾻ

0x ﾹ1 and 2x x= = -

Real Numbers

Irrational

Complex Number System

Imaginary Numbers

Pure Mixed

Rational

Integer

Whole

Natural

a + bi

a + bia = 0b ≠ 0

a + bia ≠ 0b ≠ 0

a + bib = 0

#20

1( ) 2

3f x

x= +

+