Answer:
a(n) = -9 + 7(n - 1) (Answer a)
Step-by-step explanation:
Each new term is found by adding 7 to the previous term. Thus, the formula will include "+ 7." The first term is -9.
The general formula for an arithmetic sequence is a(n) = a(1) = h(n - 1), where h is the "common difference" (which here is 7).
Thus, the desired formula is a(n) = -9 + 7(n - 1) (Answer a)
Answer:
C
Step-by-step explanation:
you can remove the brakets in C and it simplifies down to whats in B
Answer:
2 root 21
Step-by-step explanation:
14 + 6 equals 20
Add x is 21
2 root21