Write an explicit equation for the arithmetic sequence
3,7,11,15,19

= 4n - 1

Step-by-step explanation:

The n th term ( explicit equation) of an arithmetic sequence is

= a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = 3 and

d = 7 - 3 = 11- 7 = 4

Hence

= 3 + 4(n - 1) = 3 + 4n - 4 = 4n - 1

the answer is d. 75%