A miniature-doll collector has a total of 254 unique dolls. The collector can afford to add 3 unique dolls a week to the collection. Which algebraic expression represents the number of unique pieces the collector has at the end of w weeks?

Dolls=3w+254

To represent the number of unique dolls the collector has at the end of w weeks, we can start with the initial number of unique dolls (254) and add the number of dolls added each week (3) multiplied by the number of weeks (w).

Algebraically, this can be represented as:

Number of unique dolls = 254 + (3 * w)

So, the algebraic expression that represents the number of unique dolls the collector has at the end of w weeks is 254 + (3 * w).