ANSWER
d. The set of all real numbers
EXPLANATION
The basic cosine function ,
is continuous everywhere.
The function is defined for all real values of x.
The domain is the set all values of x that will make the function defined.
The domain is all real numbers.
The correct choice is D.
I don't know exactly what you want to know about this operation so I will put multiple answers.
No sé exactamente qué quiere saber sobre esta operación, así que pondré varias respuestas.
x-intercept = Nothing
y-intercept = ( 0 , 6 )
Axis of symmetry =
Vertex
Parabola opens up and the Vertex is the minimum