Answer:

Step-by-step explanation:
I can't write interval notation on Brainly but I can solve the inequality.

<em>Subtract </em>
<em> from both sides</em>

<em>Subtract 4 from both sides</em>

<em>Divide both sides by 4</em>

Just plug in b =2 into 7+b
So 7 + 2 = 9
Step-by-step explanation:
just multiple them and you'll get the results and the results you got add them together
Answer:
(a) [8, 14]
(b) 
(c)See attachment
Step-by-step explanation:
We want to choose a value of x within 3 units of 11.
(a)Now, 11-3=8 and 11+3=14
The possible values of x ranges is in the closed interval [8,14]
(b) Since x is within 3 units of 11., we have:

Solving the absolute inequality

(c)To draw the number line, we use a closed dot since we have the less than or equal to sign.