An art collector buys 6 pieces a year for y years before donating 27 pieces to a museum. Which algebraic expression represents the number of pieces the collector still has in her possession?

would the answer be 6y - 27?

Yes, the algebraic expression 6y - 27 represents the number of pieces the collector still has in her possession.

To understand why this expression is used, let's break down the information given in the question:

1. The collector buys 6 pieces a year: This means that the collector acquires 6 new pieces every year. So, the number of pieces acquired after y years can be calculated as 6 * y, which simplifies to 6y.

2. The collector donates 27 pieces to a museum: This means that the collector gives away a total of 27 pieces.

To find the number of pieces the collector still has in her possession, we subtract the number of pieces donated from the total number of pieces acquired.
So, the algebraic expression is 6y - 27, where 6y represents the total number of pieces acquired and 27 represents the number of pieces donated.

Therefore, the answer is 6y - 27.

Right again! :-)