20 and 45x
We look for a number that can go into both numbers.
5 into 20 is 4 and 5 into 45x is 9x.
5: 20 45x
4 9x
So no other number can go into 4 and 9x again.
So the GCF of 20 and 45x is 5.
Hope this explains it.







The first case occurs in

for

and

. Extending the domain to account for all real

, we have this happening for

and

, where

.
The second case occurs in

when

, and extending to all reals we have

for

, i.e. any even multiple of

.
Answer:
the line starts on (0,3) then you go down 7 points then you go 3 to the right that's thew answer
Step-by-step explanation:
$ 3042
Explanation
we need to use the formula:

Step 1
a)let

b) now, replace

therefore, the answer is
$ 3042
The answer is B and C. Hope this helps!