Is 1.31944444 closest to 1, 2, or 3 and why?

Is this a polynomial function? i need to know asap

Four equations are shown below. equation 1: y=2*equation 2: y=2x-5equation 3: y=x2 + 6equation 4: tdentify one linear equation and one nonlinear equation from the list. why each equation you identified is linear or nonlinear. nd one nonlinear equation from the list. state a reasonlinear equation

Evaluatethe expression 7.5-3.2+4(raised to the third power) / 2