Cual es el resultado de dos tercios por cuatro quintos​

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

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction