Answer:

Step-by-step explanation:
Given the rectangular poster shown in the picture, you know that its dimensions (its width and its lenght) are:

In order to calculate the dimensions of the rectangular at
times its current size, you need to multiply the original lenght by
and multiply the original width by
.
Knowing this, you get:

Answer:
Yes because you are working with negatives
Step-by-step explanation:
Answer:
9 inches deep
Step-by-step explanation:
12 inches - 3 inches = 9 inches