Which sets of numbers are closed under addition? choose all answers that are correct. a. {0, 2, 5, 8}
b. even integers
c. rational numbers
d. {0}

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee

Me i need ! find the asymptote and determine the end behavior of the function from the graph. the asymptote of the function is= blank 1 . for very high x-values,y =blank 2 options for blank 1 x=2 x=-2 x=3 x=-3 blank 2 options moves towards negative infinity moves toward the horizontal asymptote moves toward the vertical asymptote moves toward positive infinity