Jakob simplified the expression as shown.
(6.7x-.4x--2)
6.7x-3-3.4x-1-2x-2
(6.7x-3.4x-2x)+(-3-1-2)
1.3x-6
what was jakob's error in subtracting the expressions?
o he used the commutative property incorrectly.
he used the distributive property incorrectly.
o he used the associative property incorrectly.
he simplified the x coefficients incorrectly.

he used the distributive property incorrectly

Step-by-step explanation:

(6.7x-3)-(3.4x-1)-(2x-2)

should equal:

6.7x-3+3.4x+1-2x+2

however jakob put:

6.7x-3-3.4x-1-2x-2

this shows that he distributed the negative sign incorrectly

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: