9. select all equations that have one solution.
a. 2x + 2x + 2 = 4x+ 2
b. 3 (4x – 8) = 18
c. x + x - (x + x) = 2x - x + 2
d. £«-x+
e.
-3(-x - 2) = 3(x - 2)

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Answer! if you don’t mind, can you explain

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.