If 9 is p percent of 17, then p is a number between a) 0 and 20 d) 60 and 80 b) 20 and 40 c) 40 and 60 e) 80 and 100

It says 9 is P percent of 17

it means

P percent of 17 = 9

or

P % of 17 = 9

or

P/100 * 17 = 9

divide both sides by 17

we get

P/100 = 9/17

multiply both sides by 100 , we get

P = 900/17

P≈52.94

It means Option C is correct

between C) 40 and 60

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.