A local hamburger shop sold a combined total of 399 hamburgers and cheeseburgers on Sunday. There were 51 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on sunday?

Identify the function that contains the data in the following table: x     -2         0         2         3         5     f(x)     5         3         1         2         4     possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1