13x + 7x - 4x = -40
combine like terms o0n the left
16x = -40
divide both sides by 16
x = -5/2 or -2.5
Answer:
a. 40
Step-by-step explanation:
Given
and 


We plug in 2x into
.


We now substitute x=-3.


The correct choice is A.
Answer:
-1/2
Step-by-step explanation:
First you use to the formula m=y2-y1/x2-x1 and then you get -5/10 or -1/2. (m= slope)
From least to greatest: |6.99|,|-7.09|,|7.15|,|-7.18|,|-7.21|. This is becauase every value will be positive because of the absolute value