Question

A rectangle has sides measuring (2x + 7) units and (5x + 9) units.

Part A: What is the expression that represents the area of the rectangle? Show your work to receive full credit. (4 points)

Part B: What are the degree and classification of the expression obtained in Part A? (3 points)

Part C: How does Part A demonstrate the closure property for polynomials? (3 points)

Answer 1

Area = length into width
Area = (2x+7)(5x+9)
now you can solve this equation yourself
if you need help you can ask me

Answer 2

I understand that part I was wondering do I have to combine like terms

Answer 3

yes, you have to combine these terms
and then add the similar terms

Answer 4

would it be 7x+16 or do you use FOIL

Answer 5

Area = (2x+7)(5x+9)
= 10x^2 + 18x + 35x + 63
= 10x^2 +53x +63
this is your answer for part A

Answer 6

okay thank you so much

Answer 7

now for PArt B

Answer 8

I am confused on what the degree and classifications really are

Answer 9

would you tell me what is classification

Answer 10

a reasoning for why you answer is correct?

Answer 11

the highest degree is 2

Answer 12

in our answer

Answer 13

is two the degree and classification

Answer 14

yes
Part C: closed under multiplication

Answer 15

thank you

Answer 16

Welcome

Answer 17

@cj49 what is the classification of part B?

Answer 18

@imqwerty what is the classification of part B?