Someone me serious answers only! kurt is buying a new cell phone. he knows that the more features the cell phone has, the more expensive it will be.

Autility company burns coal to generate electricity. the cost c(p), (in dollars) of removing p percent of the some stack pollutants is given by c(p)= 85000p/100-p a) find the cost to remove 30% of the pollutant b) find where the function is undefined

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Find the value of x. give reasons to justify your solutions! c ∈ ae