Answer:

Step-by-step explanation:
This (±) goes between the
and


±
/2a
±
/2(3)
±
/6
± 
Dependent variable is the variable that changes due to the independent variable, independent variable is the variable that scientists change on purpose.
Answer:
I believe it's the first one
Answer:
b=4
Step-by-step explanation:
-14+2b= -2b+2
Add 2b to each side
-14+2b+2b= -2b+2b+2
-14+4b =2
Add 14 to each side
-14+4b+14= 14+2
4b = 16
Divide each side by 4
4b/4 = 16/4
b =4