The radius of the circle, measured in centimeters, is given by \(r(t)=6−\dfrac{5}{t^2+1}\), where \(t\) is time measured in hours since a circle of a 1-cm radius of the bacterium was put into the cult...The radius of the circle, measured in centimeters, is given by \(r(t)=6−\dfrac{5}{t^2+1}\), where \(t\) is time measured in hours since a circle of a 1-cm radius of the bacterium was put into the culture. Use the INTERSECT feature on a graphing calculator to determine the number of skateboards that must be sold for a worker to earn a monthly income of $1400. (Hint: Find the intersection of the function and the line \(y=1400\).)
