Katie's savings account balance is $1625. during the summer she will be making weekly withdrawals of $125. she needs to keep a balance of at least $500 in her account. how many withdrawals can katie make during the summer and still maintain a $500 balance? if the solution were graphed on a number line, which number(s) would not fit the "context" of the problem?

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