I need help with this exponential growth and decay worksheet. I linked a picture

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

When you answer this can you explain

Write an equation for the function that includes the points (1,4/5) and (2,2/3)