Asap! plsss helo i’ll give brainliest

What is the value of x? enter your answer in the box. photo attached.

What is the y intercept of f(x)=(1/2)^x?

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