Answer:
an = -8 + 5(n-1)
Step-by-step explanation:
-8,-3,2,7
First find the common difference
Take the second term and subtract the first term
-3 - -8 = -3 +8 = 5
Check with the other terms
2 - -3 = 2+3 = 5
The common difference is 5
The formula for the arithmetic sequence is
an = a1 + d(n-1) where d is the common difference and a1 is the first term
an = -8 + 5(n-1)
