3. If f(x)=-2x² + 5x – 3 and g(x) is the reflection of f(x) across the y-axis, then an equation of g is which of the following?
(1) g(x)=-2x - 5x – 3 (3) 8(x) = 2x² +5x - 3
(2) g(x)=-2x² + 5x +3
(4) g(x) = 2x’ + 5x +3

What is 20+(5 x 2/5 )+ 3 show your work

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

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.