help me

please


2.Simplify (3x − 5) + (3x + 6).


6x − 1

1

6x − 11

6x + 1


Question 3(Multiple Choice Worth 2 points)




Which of the following shows that polynomials are closed under addition when two polynomials 4x2 − 8x − 7 and −5x + 16 are added?


4x2 − 13x + 9 may or may not be a polynomial.

4x2 + 13x − 23 may or may not be a polynomial.

4x2 − 13x + 9 will be a polynomial.

4x2 + 13x − 23 will be a polynomial.


Question 4(Multiple Choice Worth 2 points)




Ricardo and Kim rowed their canoes from their base camp to a fishing camp. They rowed a distance of x miles upstream on one river, (3x2 − 9) miles downstream on another river, and (2x + 9) miles across a calm lake. Which expression is equivalent to the total distance, in miles, Ricardo and Kim rowed their canoes?


5x2

6x2

3x2 + 2x

3x2 + 3x


Question 5(Multiple Choice Worth 2 points)




Simplify (3x2 − 2) + (2x2 − 6x + 3).


5x2 − 6x + 1

5x2 − 6x − 1

x2− 6x + 1

5x2 − 8x + 3