What is the coefficient in the simplified expression?

A. 5
B. 9
C. 3x
D. 5x

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?

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Can any one me with the answers to these questions asap?