Answer: each pen costed him 2 dollars
Explanation: 24 - 10 = 14
14 / 7 = 2 $ per each pen

2 is even but is not composite. It is prime
Here we're finding the equation of a 'new' line which passes thru (1,3) and is parallel to the orange line. We need the slope of the orange line, which will also be the slope of the new line thru J.
-2 - 1 -3
m = --------- = ------ = -1/2
2-(-4) 6
Then the equation of the new line, in point-slope form, is
y - 3 = (-1/2)(x - 1).
Answer:
(x+y)
Step-by-step explanation:

Thus, the HCF is (x+y).
Answer:
623168
Step-by-step explanation:
749x832=623168