Apples music pays its sale staff a commission of 9.5% of the first $1,000 in sales and 15.5% of the balance of sales . alex the stores drum expert received $1,234.25 in commission last week

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

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

or