Solve the equation a=m-n for the variable n

Which of the following is true for the relation f(x)=2x^2+1

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

What is the rate for one gallon of gasoline