One of my teachers emailed me this can u guys please help? I have no idea what to do TvT pls and thx. "If you get the correct answer I will add 10 points to your lowest assignment next week." that's what she said in the email

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

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?