If dydx 7y what is a possible equation for the

Question

1. Evaluate d/dx x^x_.

A) Π ^xlnΠ

B) Πx Π^-1

C)(x ^{x) (}1+ln x)

D) 0

2. What is the rate constant of a substance that decays 27% after 20 minutes?

3. If dy/dx= 7y , what is a possible equation for the corresponding function?

A) y = 7e ^7t

B) y =e ^7t

C) y = e ^7t

D) y = e^t