A function u is said to be harmonic if and only if​

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

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

parallelogram is the   answer