Answer:

Step-by-step explanation:
The definition of derivative states that:

Then:



A constant function is a zero-order polynomial. The domain of any real polynomial is
. Then, the domain of the function is:

If you really want to figure this out you make an equation to solve for the time
let's let
x = time from Elena to Jada and
x = time from Jada to Elena
12 then the equation
12 = 5x +3x
would help figuring out their distance say for one of them
12 = x(5+3)
12/8 = x
1.5 = x
1. 5 hours they will meet up
Answer:
Your answers are 1.A 2.T 3.C 4.A
Answer:
Step-by-step explanation:
this