Question

1. assume that each year, the number of inactive satellites doubles compared to the previous year. complete the table below.

year
2015
2016
2017
2018
2019

of inactive satellites

20

Explanation:

Step1: Calculate the number for 2016

Since the number doubles each year, for 2016, we multiply the 2015 value (20) by 2.
$20\times2 = 40$

Step2: Calculate the number for 2017

Multiply the 2016 value (40) by 2.
$40\times2=80$

Step3: Calculate the number for 2018

Multiply the 2017 value (80) by 2.
$80\times 2 = 160$

Step4: Calculate the number for 2019

Multiply the 2018 value (160) by 2.
$160\times2=320$

Answer:

2016: 40, 2017: 80, 2018: 160, 2019: 320