x = -9
-3x when x is 3 would be -3(3) = -9
Answer:

Let's start by breaking down the problem.
This is how it should look. ↓
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⇒
⇒ 
What does that <em>x</em> mean? <em>x</em> is just a substituted value for the first 2 equations.
Now, we can solve.
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Add 3

Now, multiply 6 times 5 squared. What does 5 squared mean? 5 squared is just 5 times itself once. You most likely want to solve 5 squared before multiplying.

And now for the last step, multiply 25 times 6

With that information, the problem is solved! Your answer is 150
They will have the same Perimeter, unless you shrink or grow the image then nothing with change
C = 22d is the correct answer because for every day the cost increases by 22 so two days mean the cost is equal to 22 (2)
Answer:
(−3)(+10P)
Step-by-step explanation:
in pic
(Hope this helps can I pls have brainlist (crown) ☺️)