The temperature went from -12°f to18°f. which of the following expressions could be used to find how much the temperature changed?
-12 - 18
18 - (-12)
-12 + 18
18 + (-12)

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