Mark’s room is 12.3 wide and 17 feet long. mark wants to cover the floor with carpet. how many square feet of carpet does he need? do i multiply because the answer i got is 209.10

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters

Find the axis symmetry of x y=4x-6x+3

You draw a card at random from a deck that contains 33 black cards and 77 red cards.