Question

The width of a rectangle is St-7.5 feet and the length is 7.5t +9 feet. Find the perimeter of therectangleThe perimeter of the rectangle is feet.(Simplify your answer. Use integers or decimals for any numbers in the expression)

Answer 1

The expression of the width is

$8t-7.5$

The expression of the length is

$7.5t+9$

The perimeter formula is

$P=2(w+l)$

Let's replace the given expressions

$P=2(8t-7.5+7.5t+9)$

Now, we have to reduce like terms

$P=2(15.5t+1.5)$

Then, we use the distributive property

$P=31t+3$

Hence, the perimeter of the rectangle is 31t+3 feet.