The temperature at the surface of the ocean is . At meters below the surface, the ocean temperature is . By how much does the temperature decrease for every meters below the ocean's surface?

In a growth period, a population of flies triples every week. If the original population had 3 flies, how big is the population after 4 weeks?

is the radius of the base of a cone; is its height; is its volume.

; .

Which of the following is a true statement?

and are the radius and volume, respectively, of a given sphere.

.

Which of the following is a true statement?

The value of varies directly with the square of __and the cube of . If when and , then what is the value of _ when and ?

Phillip can paint square feet of wall per minute. What area of the wall can he paint in 2.5 hours?

and are the diameter and circumference, respectively, of the same circle.

Which of the following is a true statement? (Assume all quantities are positive)