13. Martha earned £36 000 in the year 2016 and £38 880 in the year 2017. Find the percentage increase in her salary from 2016 to 2017.
You must show your calculations 5
(2 Points)

What is the percent of increase for a population that changed from 438,000 to 561,000

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

How do you use the elimination method for this question? explain, because i really want to understand!