I really need help with this sampling question and it would mean a lot if someone could answer it

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Write an equation in slope intercept form of the line passes through the given point and is parallel to the graph of the given equation (0,0); y=3/8 x+2

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.