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On a piece of paper graph f(x)=5•(0.4)^x

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much