Question

David is selling floral arrangements. Each arrangement uses 1 vase and 12 roses. Each vase costs David $2.00. Let C be the total cost of the arrangement and r be the cost of 1 rose. Which equation should David use to find the total cost of each arrangement?

Answer 1

The cost of 1 vase is $2.0,
the cost of 12 roses is 12 * r $ per rose = 12r dollars.

so the cost of 1 vase with 12 roses is (2.0+12r) $

Each arrangement uses 1 vase and 12 roses, so the cost C of one arrangement is :

C=(2.0+12r) $