If a savings account of $10,200 is compounded quarterly at 17.83 % annual interest, how much will the account be worth in 17 months? Round your answer to the nearest cent, if necessary. Note: 365 days in a year and 30 days in a month.

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363

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

b, i believe, but not sure.