If a quadrilateral has exactly 2 lines of symmetry and both are angle bisectors then the figure must be a rhombus because it has exactly 2 pairs of congruent angles.
I hope this helps! :)
Converting 18 kilometers to meters.
1 kilometer = 1000 meters
I would use 1000m/1km as a conversion factor.
18 kilometers * 1000m/1km = 18 * 1000m = 18,000m
The km unit cancels out because it is both in the numerator and in the denominator.
You would put 6 in for k and 2 in for c, making it "5*6-20+8", which equals 18. Hope this helps! :)
Answer:
A. 
B. 

C. Both sides will continue to increase as they go because this is an even degree quadratic equation.
D. You use the two x-intercepts to make sure it is in the correct area and since we know the end behavior all you'd have to assume is that it continues to go up so any negative answers you may accidentally receive would be incorrect.