Andy buys a new car for $23,540. He estimates that the car will decrease in value by about 5% each year. Which of the following functions best models this situation?

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?