What is the perimeter of this triangle? 16 ft 8 ft 4 ft 12 ft

Hannah has 5 more than twice the number of baseball cards that leo has. if leo has x cards, which expression shows the number of baseball cards hannah has?

1. 25pi ft^2 2. 5pi ft^2 3. 10pi ft^2 3. 20pi ft^2

What is the value of d? 9d = –5.4 d =