(a) 50% of 164 (b)75%of 12 (c) 25/2 of 64 help me in these ques

of comparing quantities
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At a kentucky friend chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. if 2,400 people responded to the survey, how many people preferred regular chicken?

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120