I guess your question is
<span>Sean read 15 of a book in 112 hours. How long will it take Sean to read 12 of this book?
15 books ........112 hours
12 books..........? hours
12 x 112 / 15 = 89.6 hours.
</span>
Chenoa starts with $250 in her saving account and each month she adds $15 in her saving account.
Therefore, we obtain a sequence as:
250, (250+15), (250+15+15),...
250, 265, 280,....
So, we get the first term (
) as 250.
Now , we can clearly observe that the first term is 250 and second term is obtained by adding 15 to the first term that is 265 and so on.
Similarly in an arithmetic progression, last term is
and its previous term is
.
Similarly,
will be obtained by adding 15 to its previous term
.
So,
and
=250.
Therefore, Option C is correct.
(9 x² + 8 x + 2) - ( 4 x² + 2 x -5 )
= 9 x² + 8 x + 2 - 4 x² - 2 x + 5
= 5 x² + 6 x + 7
Answer:
Step-by-step explanation:
question doesnt make sense
It should be around 27.45