In his math class, Rob observes that students who watch more TV tend to have more test anxiety. He decides to make a graph,
matching each person's weekly TV time with his/her level of test anxiety.
In this situation which is the DEPENDENT variable?
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Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

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

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out