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?
69
189
378
390

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt