What are 2 equivalent expressions for "-2v + (-4) + 8 + (-3v)

Suppose the first five terms of a sequence are 4, 5, 9, 27, 123. how could the next term in the sequence be generated?

Which of the following is the true for f(x) = 5cos

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.