Quadri-, quadru-, quadr-is a Latin prefix related to the verb quadrare âto make squareâ, quadratus âsquareâ etc. Quad is simply an English shortening of quadrangle, quadruplet etc. So quadri-and quad are actually the same word.
The Washington state sales tax rate is 6.5% , and the average WA sales tax after local surtaxes is 8.89% 1  . Groceries and prescription drugs are exempt from the Washington sales tax. 2  Counties and cities can charge an additional local sales tax of up to 3.1%, for a maximum possible combined sales tax of 9.6%.
The unemployment rate in Federal Way, Washington, is 4.90%, with job growth of 1.69%. Future job growth over the next ten years is predicted to be 38.48%. Federal Way, Washington Taxes. Federal Way, Washington,sales tax rate is 9.50%. Income tax is 0.00%.