After reading through the story problem, I ended up with this equation:
(35-2)(x+.5) =?
or
(35-2)(10+.5)=?
Explanation:
He sells 35 books for usual weeks. Since he is selling his books at $.50 more his average number of copies decreased by 2.
35-2 = 33
Next, we know that he adds $.50 for his price for each copy. If the price is $10 per copy than it looks like this:
$10+$.50= 10+.5
or if the price is not $10 it will be
$x+$.5= x+.5
<u>Given:</u>
Number of pages read by Jack = 40 per hour
Rate of reading by Dave =3/5 of a page in a minute
<u>To find:</u>
The person who reads faster and by how many minutes.
<u>Solution:</u>
If Dave reads 3/5 of a page in a minute then in an hour he would read,
(60 minutes = 1 hour)
pages in an hour
The difference between pages read by Jack and Dave is
Therefore, Jack reads faster than Dave by 4 pages.
Yes.The second factor is the difference of 2 squares,
so the second factor alone becomes
(x² - 4) = (x + 2) (x - 2)
I believe it's the first answer choice.