REWARDING FOR correct ANSWER Mr. Wiggins recorded the daily low temperatures, in ºF, for six days.
The daily low temperatures for the first five days are shown below.
37 ° , 39 ° , 34 ° , 49 ° , 45 °
If the range of daily low temperatures for all six days was 19º, which was the temperature on the sixth day?
38º

53º

56º

68º

i told u the calculator right?

Step-by-step explanation:

https://www.calculator.net/mean-median-mode-range-calculator.html

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'.