I think X is 2. But I am not sure, cuz I don’t know what you teacher is really asking you to do.
Yes it is keep up the good work
Extra 10, 10 is half of what she ordered so she received an extra 50%
1. D linear
2. A quadratic
3. B exponential
4. C rational
No
because 2 similar triangles have to meet one of the following conditions:
1. all sides are equal
2. 2 pair of equal sides & the angles between these sides are equal