Which of the following functions have domains of all real numbers? select all that apply

With #! i’ve tried to figure it out but i can’t.

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Which of the following shows the length of the third side, in inches, of the triangle below