The distance from around the earth along a given latitude can be found using the formula c - 2rcos l. where r is the radius of the earth and l is the latitude. the radius of earth is approximately 3960 miles. describe the distances along the latitudes as you go from 0° at the equator to 90° at the poles.

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes. she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?