Solve the system of equations by substitution.
2m - 7n = -18.5
m = 10 - 2n

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

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]

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?