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? (2 points)


69
189
378
390

Answer 1

t = 21 and f = 3
now we sub into the formula..
9(t) + (3f)(t) + 12
9(21) + 3(3)(21) + 12
189 + 9(21) + 12
189 + 189 + 12
390