Which pair of expressions below is equivalent?

a. x + y + x+ y and 2(x +y)
b. 5(2x - 3y) and 10x -3y
c. 4x -5y and 5y - 4x
d. 9x + 2y and 11xy

Ineed no it anyone can see this

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Which of the following circles have their centers in the third quadrant? check all that apply.