Jay received a $34 gift card for a local coffee shop. Every day he spends $2 for a cup of coffee. Write and equation that models the balance of his gift card, Y. as a function of time in day, x.

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Which point is a solution to y s 4x + 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