Name the property shown by each statement: d x e x 0 = 0

Is a deceasing linear model or an exponential decay model likely to be a better fit for the data about remembering? ?

Is this a polynomial function? i need to know asap

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol