If you would walk around the earths equator with an average speed of 5 miles per hour, how many days would you need to walk to come back to your starting point?

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Empty box + box + empty box fill in the box is equal to 30 how