What is 23/40 as a percent

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

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

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never