Question

Danica is arranging flowers for a party. On each table, t, there will be a vase of 9 flowers and 3 bowls of flowers with f flowers inside. Danica needs an additional 12 flowers for a cake topper. This situation can be written as the following expression:

9t + (3f)t + 12

How many flowers should Danica purchase if she has 21 tables with 3 flowers in each bowl?

Answer 1

Danica should purchase 390 flowers.

9(21) + (3 x 3)21 + 12
189 + (9)21 + 12
189 + 189 + 12
378 + 12
390