What is the correct reason for statement 2?

prove: 4 + 3x + (x ∙ 2) = 5x + 4

statements reasons
1. 4 + 3x + (x ∙ 2) 1. given
2. 4 + 3x + 2x 2.
3. 4 + 5x 3. addition
4. 5x + 4 4. commutative property

associative property

commutative property

multiplication

addition

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here