Answer:
The answer is option C: $22.55.
Step-by-step explanation:
Given is that Poindexter’s credit card uses the average daily balance method.
For the first 15 days of a 31-day cycle, his balance was $2110
He paid off his entire balance and didn't make any new purchases after that.
Means for the first 15 days, the balance was $2110 and for last 16 days the balance was$0.
The APR is 26% or 0.26
The interest can be calculated as:
≈ $22.55
The interest charged was $22.55
<u>Answer:</u>
Lamar will charge to the comic dealer for a comic book.
<u>Solution:</u>
It is given that lamar purchases a comic book for . He then marks up the price of a comic book by
which means he increases the price of the book by
and then sells it to the comic dealer.
We have to find out how much will he charge the comic book dealer.
New price of the book after lamar marks up the price is given by
New price
=
Thus, lamar will charge to the comic dealer for a comic book.
Find the critical points of :
All three points lie within , and
takes on values of
Now check for extrema on the boundary of . Convert to polar coordinates:
Find the critical points of :
where is any integer. There are some redundant critical points, so we'll just consider
, which gives
which gives values of
So altogether, has an absolute maximum of 65/16 at the points (0, -1/2) and (0, 1/2), and an absolute minimum of 3 at (-1, 0).