The article states that life expectancy decreased from 2014 to 2015. Could this possibly be due in large part to Opioid overdoses or the fact that the population is aging? Or? Explain.

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]

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?