Select the correct word to describe the function. the equation y = startfraction 5 x cubed over 8 endfraction represents functio
n. the equation y = 6 + 0.25 ln x represents function. the equation y = startfraction 18 over 1 + 6 e superscript negative 0.25 x baseline endfraction represents function. the equation y = 5x3 + 8 represents function.