Answer:
I think its b
i hope you pass
you need to first figure out the equation f.
it says that 18=2/5f, so why don't we use inverse operation and multiply 18 by 5/2. and the answer would be....
Step-by-step explanation:
1. 1, 2, 5, 10
2. 1, 5, 25
3. 1, 2, 4, 8, 16, 32
4. 1, 3, 9, 27, 81
5. 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
6. 1, 2, 4, 5, 10, 20, 25, 50, 100
7. 1, 5, 25, 125
8. 1, 2, 4, 11, 22, 44
Hope this helps!