❓ x 2 1/2 = 15/16 super easy question :)

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?

If i have one apple and give you the apple, how many apples do i have?

How do you determine if an ordered pair is a solution to a given equation?