Answer:
28x - 14
Step-by-step explanation:
3x - 5 + 25x - 9
= 28x - 14
441 is odd, so we can't divide it by 2.
Since the sum of its digits is
, which is divisible by 3, we can divide 441 by 3, and we have

Which is still divisible by 3, because
. We have

49 is not divisible by 3 anymore, nor by 5 (it doesn't end with 0 or 5).
It is divisible by 7 though, we have

and finally,

So, the factorization of 441 is

Yes you have the correct answers for each of the four problems. Nice work.
For anyone curious,
rd = removable discontinuity
id = infinite discontinuity
c = continuous
Multiplication it says time 3 so 12 times 3 is 36
Answer:
outside the circle
Step-by-step explanation:
diameter and radius are the main attractions in maths regarding circles.