Complete My Online Assessments

I need help finishing a set of online assessments that I have been assigned. The bulk of them are maths questions built around basic plumbing calculations—pipe sizing, flow-rate formulas, simple geometry, ratios and the like—so solid numerical skills are essential... (Budget: $30 - $250 NZD, Jobs: Excel, Geometry, Math Tutoring, Mathematics, Matlab and Mathematica, Plumbing, Statistics, Time Management)