Which unit rate is equivalent to 13 miles per gallon? (5 points) twenty-six miles over two gallons two gallons over twenty-six miles thirty-nine miles over four gallons four gallons over thirty-nine miles

18feet.

Step-by-step explanation:

To find the perimemter of a rectangle, you just add all the sides.

A rectangle has 4 sides in total, where 2 are equal, and the other 2 are als equal.

So, you just add 7+2+7+2, which gives 18.

This is why, the perimeter of this rectangle is 18feet.

Hope this helped, have a nice day!