I need help please I will ask questions I will mark brainliest

What is the 12th term of b(n)=-4-2(n-1)

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Will give let f(x)=2x and g(x)=[tex]2^{x}[/tex] graph the functions on the same coordinate plane. what are the solutions to the equation f(x)=g(x) ? enter your answers in the boxes x=[? ] or x=[? ]