The coordinates of the vertices of a polygon are (0,3), (2,3), (2,0), (1,−4), and (−2,−1). What is the perimeter of the polygon to the nearest tenth of a unit?

15.8 units

16.9 units

17.8 units

18.6 units

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c