Answer:
I believe Commercial Mathematics is the kind of mathematics for the bussiness world. Where you calculate: There are 12 productions and three companies. Two companies already took 8 productions. How many productions will the last company take? Stuff like that.
(a) If

is the mass (in mg) remaining after

years, then


(b)

(c)
Answer:
(You never showed the graphs we were suppose to choose from)
The graphs of all exponential functions have these characteristics. They all contain the point (0, 1), because a0 = 1. The x-axis is always an asymptote. They are decreasing if 0 < a < 1, and increasing if 1 < a.