Which sum or difference is modeled by the algebra tiles?

a. (-x² - 2x + ² + 2x +1)
= -2x²-4x + 3

b. (-x²- 2x + 4)+(-x² - 2x +1)
= -2x²-4x + 3

c. (-x²- 2x + ²- 2x -1)
= -2x²-4x + 3

d. (-x²- 2x + 4)+(-2x²+2x+1) = -2x²-4x + 3

Option A) is modeled by the algebra tiles

Step-by-step explanation:

Given

To verify that the given sum or difference is modeled by the algebra tiles

Now applying the algebraic sum operations we get

  ( using algebraic sum operations )

Therefore

Option A)   is modeled by the algebra tiles

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~