Is the ratio 4.2: 1.5 proportional to the ratio 12.6: 4.5? 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]

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?