I go to the store and buy a book with my credit card for $14.95. What is the medium of exchange in that situation? SUBJECT- Economics

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

5×^2+20-15 or -(5x^2-20+15)

Dis the answer you perception is how you see the world 

The name may be in importnce  to them