Question

this question has two parts. first, answer part a. then, answer part b.
part a
a. find the common difference of the arithmetic sequence.
3, 7, 11, 15, ...

part b
b. find the next three terms.
, ,

Explanation:

Step1: Calcular diferencia común

$d = 7 - 3 = 4$

Step2: Calcular 6º término

$a_6 = 15 + 4 = 19$

Step3: Calcular 7º término

$a_7 = 19 + 4 = 23$

Step4: Calcular 8º término

$a_8 = 23 + 4 = 27$

Answer:

a. 4
b. 19, 23, 27