PLEASE HELP!!
a) 16 units
b) /~13 units
c) 20 units
d) /~ units

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 you simplify 4/7? 24 points will be awarded!

What expression is equivalent to log3(x+4)