Answer:
-2
Step-by-step explanation:
when x = 5, f(x) = -2
hope this helps. good luck
Answer: 2.1, I don't really know how to show a model for this, its just that when you multiply 3 and 7 you get 21, when you do 0.7 and 3, you just put the decimal place between the 2 and 1.
The answer is C because:
It is keeping it identity through the multiplication.