Pienso un número si lo elevo al cuadrado y lo multiplico por 4 me da 100

Which one is the correct answer, and why?

If f (x) = 2x2 +5/(x-2), complete the following statement: f(6) =

Translate the algebraic expression shown below into a verbal expression. fraction with variable x in numerator and 6 in the denominator. the sum of six and some number the product of six and some number the quotient of some number and six the difference of six and some number