What is the equation of the line?

Simplify the expression. -2/5(10+15m-20n)

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.

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq