Question

Isabella purchased 3 books from the book store. She now owns 11 books that she wants to read before the end of the year. If x represents the number of books she started with, which equation could be used to determine the value of x?

A.) x-11=3
B.) x+11=3
C.) x+3=11
D.) x-3=11

Answer 1

Remark

The key phrases are "she bought 3 books" and "she wants to read 11 before the end of the year."

So she had x and she added 3 to that x. The total is now 11. Eleven is on the right side of the equal sign.

So is it C or is it D?

D has the meaning of "She gave away 3 books." and is left with 11.

C <<<< Answer.

She started with x and added 3. She now has 11.