Which expression is equivalent to 4^4 x 4^-9

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?