Find the slope of the line through (-9,-10) and (-2,-5)

a. -5/7
b. 7/5
c. 5/7
d. -7/5

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

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What is the equivalent fraction for the following fraction using 5 as the multiplier? 1/2