The weight of 100 identical samples of a subtance is 0.1 pound. what is the weight of 10,000 samples

How do i do this activity, is appreciated

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

Simplify. 3(4+4x) (type your answer in with no spaces)