If x, y, and z are in proportion, find x if y=16 and z=12

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

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