Which function G represents the exponential function f(x)=5^xafter a vertical stretch by a factor of two and a reflection across the X axis

Chamberlin wants to bottle 1\8 of her apple cider. she pours the apple cider evenly among 6 bottles. what fraction of her apple cider will she put in each bottle? what expression could represent this situation?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)