To solve the problem, we need to find the total number of birdhouses after 5 classes each made 7 birdhouses.
Starting with the initial number of birdhouses, which is 48, we add the total number of birdhouses made by the classes (5 classes × 7 birdhouses per class).
The correct equation would be:
48 + (5 x 7) = __birdhouses
So the correct response is:
48 + (5 x 7) = __birdhouses