Which data set represents the histogram?

A) f(x) = 5x - 11
B) f(x) = x2 - 5
C) f(x) = -1/2x
D) f(x) = x^2/2 - 3

the / means its a fraction and ^ means that number has been squared.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

What is the multiple zero and multiplicity of f(x) = (x ? 3)(x ? 3)(x + 5)? multiple zero is 3; multiplicity is 2 multiple zero is 5; multiplicity is 1 multiple zero is ? 5; multiplicity is 1 multiple zero is ? 3; multiplicity is 2

Im literally having a mental breakdown