Answer:
b = -9
Step-by-step explanation:
-12 = 24 + 4b
Subtract 24 from both sides
-12 - 24 = 24 + 4b - 24
-36 = 4b
Divide all sides by 4
-36 ÷ 4 = 4b ÷ 4
-9 = b
-Chetan K
Answer:
(c) 
Step-by-step explanation:
Given
The attached graph
Required
Find h(3)
The formula to use in solving this is:

Substitute 3 for x

From the attached graph, the value od x = 3 points to the value of y = 1.
So, we have:

Answer: x=5
Step-by-step explanation:
Substitute 17 for n(x)
17=2x+7
Subtract 7 from both sides
10=2x
Divide each side by 2 to get the x by itself
x=5