Identify the system of equations that represents the following scenario. Ken is younger than Tony. And Tony's age is 3 times Ken's age.

A. x+y=12. b. x-y=12. c. y-x=12. d. x+y=-12
y=3x. y=3x. y=3x. y=3x
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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

Write the equation in logarithmic form m^x=n

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups