Answer: 63
Step-by-step explanation: 21+21+21
The expression can be simplified to a polynomial of degree 2.

<h3>
How to simplify the expression?</h3>
Here we have the expression:

We can directly simplify this by taking the variable as common factor:

This is a polynomial, as you can see, the maximum exponent is 2, so the degree of the polynomial is 2.
If you want to learn more about polynomials:
brainly.com/question/4142886
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A. 30 degrees
We just rotated the figure but we didn't change the angles!
Answer:
8.34375 Round it to the nearest Hundred
Step-by-step explanation:
22.25×9 = 200.25 ÷24= 8.34375
1. D
2. C
3. B
4. D
5. 48 cm^3
6. 191.55 cm^3
7. Not sure
8. C