Final answer:
To find the length of the picture that is still showing, subtract the hidden part from the total length of the picture. The length that is still showing is 27/4 inches.
Step-by-step explanation:
To find the length of the picture that is still showing, we need to subtract the hidden part from the total length of the picture. The hidden part is represented by the fraction 1/4 of an inch. So, the expression to find the length that is still showing is:
7 - 1/4
Now we can simplify the expression:
7 - 1/4 = 28/4 - 1/4 = 27/4
Therefore, the length that is still showing is 27/4 inches.