6m+7n+5m−3n simplified

An energy plant is looking into putting in a system to remove harmful pollutants from its emissions going into earth's atmosphere. the cost of removing the pollutants can be modeled using the function c = 25000p/100 -p what is the vertical asymptote?

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth