Can someone please help me with number 8?!

An energy plant is looking into putting in a system to remove harmful pollutants from its emissions going into earth's atmosphere. the cost of removing the pollutants can be modeled using the function c = 25000p/100 -p what is the vertical asymptote?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

In the geometric progression –3, 12, −48… what term is 3,072?