A tv show is on from 7:00 to 8:00pm. If there are 18 minutes of advertisements
during that time, what percent of the
show was advertisements?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Write the expression as a single natural logarithm. 2 in a - 4 in y

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters