Mary’s cookie jar opening has a circumference of 24 inches. Which equation can be used to describe the relationship between pi (,
the circumference of the cookie jar, and the diameter of the cookie jar?

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal