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:

She spent 20 dollars on each book because if you subtract 18 from 198 you'll get 180 then you divide that by 9 n it leaves you with 20.
Answer:
Answer is B the 2nd one hope it’s right i think i did this
Step-by-step explanation:
Where are the number line choices!?
We can use trigonometry. The cosine of 15 will be the side adjacent to the 15-degree side (the one we are looking for) divided by 20, the hypotenuse. As cos(15) is about .966, we get 19.32 as the side we are looking for.