The first number in a pattern is 12. The rule is often pattern is add 5. What is the next term in the pattern.

17

Step-by-step explanation:

If the starting number is 12, and the rule is to add 5, then you will add 5 to 12 and get 17. To get the next number you will add 5 to 17 and get 22 . Then add five to 22 and so on.

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !