Determine whether each pair of expressions is equivalent. Show your work.
2(x-y) and 2x - 2y

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?