If n = 4, the value of the expression 28 - 12 + the square root of n ÷ 2 is?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

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=[? ]