Answer:
11
Step-by-step explanation:
15 - 4 = 11
this formula, doesn't rely on a product, relies on a "sum", or is namely an arithmetic sequence, aₙ₋₁ -3 is another way of saying, the value of the previous term minus 3, so it relies on the ordinal value of a term, so is an recursive formula, well, let's get it when n = 4.

Answer:
um im pretty sure y = -15 and x = -17 but im pretty sure i did that wrong too lol sorry if it is wront
Step-by-step explanation:
Answer:
Abs 12 -- ef de Venta de casas en Venta por que es UN hombre de casas abs