What is the total number of episodes where alexa wyatt is the writer?
CREATE TABLE table_16175064_3 (
    series__number VARCHAR,
    writer_s_ VARCHAR
)
SELECT COUNT(series__number) FROM table_16175064_3 WHERE writer_s_ = "Alexa Wyatt"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the total number of episodes where alexa wyatt is the writer? ### Input: CREATE TABLE table_16175064_3 (
    series__number VARCHAR,
    writer_s_ VARCHAR
) ### Response: SELECT COUNT(series__number) FROM table_16175064_3 WHERE writer_s_ = "Alexa Wyatt"