Marco wants to lay artificial turf in his rectangular-shaped backyard. The width of the yard is represented by the function f(x) = 23x and the length is represented by the function g(x) = x.

Which function represents the area of artificial turf Marco needs, h(x) = f(x)g(x)?

h(x) = 24x
h(x) = 23x^2
h(x) = 23x
h(x) = 23x^2 − x