Which expressions are equivalent to the perimeter of the shape? How do you know? a. x + 3 + 3x + 1

b. 2x + 4 + x

c. 4x + 4

d. 2x + 2 + 2x + 2

Ellen makes and sells bookmarks. she graphs the number of bookmarks sold compared to the total money earned. why is the rate of change for the function graphed to the left?

14+2 (56-1) this is an arithmetic sequence

If the equation of a line containing the midsegment of a triangle is y = -1/4x -11, what is the slope of the triangle side that is opposite the midsegment (the one not touching it). explain how you know.