Answer:
n=42
Step-by-step explanation:
Answer: i'm pretty sure the answer is 10.5
Step-by-step explanation: <em>i multiplied 5/7 by 14.7 </em>
I'm sorry if this is wrong but if it's right i need brainliest to rank up so please mark me brainliest:)

Above, I changed the fraction form of x and y into exponential form so it is easier to see the differentiation. Now, we can differentiate:

Now that we have dy/dx, we can plug in the x, which is 4, and the y, which is 4/19. We know these values of x and y because your question stated y(4) = 4/19.
The answers are C and also D
Answer:
Option (B)
Step-by-step explanation:
Given sequence is 45, 135, 405, 1215, 3645..........
Since it's a geometric sequence,
Common ratio of each successive term to the previous term
r = 
First term of the sequence 'a' = 45
Explicit formula of a geometric sequence will be,


Recursive formula of this sequence will be,
, 
Therefore, Option (B) will be the answer.