7a) An endangered species has only 450 animals remaining in the wild. The population decreases by 10% each year. Write an equation to describe the number of animals left after x years.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

answer: 5

step-by-step explanation:

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13

y-3=-3/2(x+4)

ur very much welcome