I need help please like I don't get the whole thing for angles and stuff ​

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

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

What is the inverse of the function f(x) = 2x + 1?