What expression represents the statement four times the difference of nine and a number

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?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

How does reflecting or rotating a figure change the interior angles of the figure?