Please Help With this I NEVER DID THIS KIND OF QUESTION!!

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

Is this a polynomial function? i need to know asap