The volume, V, of a sphere in terms of its radius, r, is given by V(r)=43πr3. Find the radius of a sphere, in feet, with a volume of 500 cubic feet.

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

How do you solve a question like this?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?