Respuesta :

Answer: the formula is

(-4) + (-5) = -9

(-9) + (-5) = -14

Step-by-step explanation:

Answer:

an  = 1 − 5n

Explanation:

a1  = 1 − 5 (1) = −4

a2  = 1 − 5 (2) = −9  

a3  = 1 − 5 (3) = −14