Given:
The inequality is

To find:
The missing step in solving the given inequality.
Solution:
Step 1: The given equation.

Step 2: Subtract 8x from both sides.


Step 3: Add 4 on both sides.


Step 4: Divide both sides by -2 and change the sign of inequity as we divide the inequality by a negative number.


Therefore, the missing step is
.
Expression:

We can add just the terms that are similar, as follows:

Simplifying:

Answer: B.
18r+15s add it then yu will get
Answer:

Step-by-step explanation:
step 1
Find the lateral surface of the cylinder (hot water tank)
The lateral area is given by the formula

we have

substitute


step 2
Find the volume of fiberglass composite needed
Multiply the lateral area by the thick

-----> exact value
assume


My guess is B. hope i help