Todd and amani started savings accounts. todd started with 20$ and deposits 5$ each week. amani started with 5$ and saves 10$ each week. complete the table. when do todd and amani have the same amount in their accounts? write an equation to represents the total amount in each of their accounts at any given time.

Bring the fraction a/a-4 to a denominator of 16-a^2

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

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?