Brenna charges $15. $30, $45, and $60 for babysitting 1, 2, 3.
and 4 hours, respectively. is the relationship between the amount
charged and the number of hours proportional? if so, find the unit
rate. if not, explain why not. zrp2a

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Which expression converts 45 degree to radians

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