What is the y-intercept of the line shown?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Nine more than four times a number is the same as one less than twice the number. find the number?

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=[? ]