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

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.

i think 5 miles per hour

step-by-step explanation: