plot -10000*(1/(1 + x)^(0.0000)) + 2750*(1/(1 + x)^(0.1644)) + 4250*(1/(1 + x)^(0.8301)) + 3250*(1/(1 + x)^(1.1260)) + 2750*(1/(1 + x)^(1.2493)) from x=-0.1 to 0.9