Cuál de las siguientes oraciones contiene un predicado nominal

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

(x-5)1/2+5=2 what is possible solution of this equation

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?