A package of 30 scented pencils costs $24.90. At this rate, what is the cost of 1 pencil in dollars and cents?

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]

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?