Can anyone answer this?

Which representation has a constant of variation of -2.5

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4