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
Answer:
undefined
Step-by-step explanation:
well the slope is

which is undefined
Answer:
The bench costs $425
Step-by-step explanation:

How I did it::
1)

2)


3) Check

Answer:
x = -5
Step-by-step explanation:
12x - 3x + 4 = 5x - 16
9x + 4 = 5x - 16
9x - 5x = -4 - 16
4x = -20
x = -5