Answer:
P = 15 + 24y
Explanation:
The perimeter of a rectangle is the sum of the lengths of all four sides. If one side of the rectangle has a length of 7.5 and the other side has a length of 12y, we can write the expression for the perimeter as:
P = 2(7.5) + 2(12y)
Simplifying this expression, we get:
P = 15 + 24y
Therefore, the simplified expression for the perimeter of the rectangle with one side of length 7.5 and the other side of length 12y is 15 + 24y.