Who wants to talk?? I’m bored and all my friends busy

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

Can someone me and plz do the problem

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41