I am not sure maybe it is 6
Answer:

Step-by-step explanation:
We are given that

Differentiate w.r.t x

By using formula







Hence, the derivative of function

Answer:
$297.09
Step-by-step explanation:
To answer this question, just add:
163.63 + 133.46 = 297.09
So, Layla spent $297.09 in all
Hope this helps :)
Answer: A
You’re basically adding m - 2 nine times
So it’s 9m - 18
Or 9m - 9(2)