12, or -12
12*12 = 144
-12*-12 = 144
The answer would be letter B. You can see that the price of the demanded products as the time passes by decreases. So the answer is letter B.
F(-2) is the f(x) when x is -2. From the table, it is 1.
Well you need to explain what is going on here so try to rephrase this.
A-8a+12-3a+6
The answer is 11a+18
