If x is a rational number and y=2/3 which statement describes the sum of x and y

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Which statement accurately explains whether a reflection over the y axis and a 270° counterclockwise rotation would map figure acb onto itself?

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