Rolf spent 15 years last week practicing his saxophone. If 3/10 of the time was spent practicing warm ups routines, how much time did he spend practicing warm up routines?

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]

Which value of y will make the inequality y< -1 false?

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?