Given that the width of the rectangular piccture is:

Where "l" is the length of the picture.
You know that the perimeter is:

The formula for calculating the perimeter of a rectangle is:

Where "l" is the length and "w" is the width.
Therefore, you can substitute the perimeter and the width into the formula, in order to find "l":

Now you can solve for "l":





Hence, the answer is:
Answer:
C since y-x are being subtracted and there should be another subtraction but there isnt
Answer:
A train travels at a constant rate of 40 miles per hour. How many miles will it travel in 3 hours?
Step-by-step explanation:
120.
40 x 3
=
120