PLEASE HELP DON'T UNDERSTAND

<av>={(-4)+(-7)+(-13)+(-5)+(-6)}/5

=(-35)/5

= -7°F

explanation:

here you have to find average low temperature!

temperature by days is given, but to find average you have to add all the temperature recorderd first then divide it by total no. of days to get average of them!

average of any thing is determined by (sum of total observation)/(number of observation)

;)✌️

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

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: