Pre-Calc/Chapter 1: Functions and Graphs/1.4 Building Functions from Functions Solve the problem.  A satellite camera takes a rectangular - shaped picture... Solve the problem.  

A satellite camera takes a rectangular - shaped picture. The smallest region that can be photographed is a 4-km by 6-km rectangle. As the camera zooms out, the length l and width w of the rectangle increase at a rate of 3km/sec. How long does it take for the area A to be at least 4 times its original size?]]> 1.0000000 0.3333333 0 true true abc 9.7 seconds Incorrect 3.28 seconds Incorrect 4.94 seconds Incorrect 1.61 seconds Correct