Explain how to calculate the circumference of a circle when given either a diameter or radius and also how to estimate the circumference of a circle for a multiple choice question. please help me

How far is x from 5 on a number line?

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3