Thank you for posting your question here at brainly. Feel free to ask more questions. The best and most correct answer among the choices provided by the question is A. 2 . 

Hope my answer would be a great help for you.

7 0

3 years ago

What is the complete factorization of r2 - 6r - 9s2 + 9? A) (r - 3 + 3s)(r - 3 - 3s) B) (r + 3 + 3s)(r - 3 - 3s) C) (r - 3 + 3s)

nikitadnepr [17]

$r^2-6r-9s^2+9=r^2-6r+9-9s^2=r^2-2\cdot r\cdot3+3^2-9s^2\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=(r-3)^2-9s^2=(r-3)^2-(3s)^2\\\\\text{use}\ a^2-b^2=(a-b)(a+b)\\\\=(r-3-3s)(r-3+3s)\to A$

6 0

3 years ago

Kayla owns a food truck that sells tacos and burritos. She sells each taco for $3 and each burrito for $7.25. Yesterday Kayla ma

Trava [24]

Let t = the number of tacos sold
Let b = the number of burritos sold
3t + 7.25b = 595
B=2t

4 0

3 years ago