1 B 28 is not divisible by 3
2. C 12 is divisible by 12
3. 5 is the greatest common factor
4. 23 is prime
5. 47 is prime
6 4 is the greatest common factor
Answer: She will have to work 9 hours
Step-by-step explanation:
$10+ $7 = 17 x 9 = 153
Hope this helped :)
The way it is written, none of them.

The "a"s cancel out.
Answer:




Step-by-step explanation:
We have that:

When we substitute n=1, we get:

When we substitute n=2 we get:

When we substitute n=3, we get:

When we substitute n=n+1, we get:

Now

We expand and simplify to obtain:

