Question

In a sequence of numbers, a3=0, a4=4, a5=8, a6=12, a7=16. Based on this information, which equation can be used to find the nth term in the sequence, an ?(1 point)an=4n−8 an=4n−12 an=−4n−6 an=−4n−12

Answer 1

an = 4n − 12

Reason: terms increase by 4 each step, so an = 4n + b. Using a3 = 0 gives 12 + b = 0, so b = −12.