Lucy measured a line to be 21.9 inches long. If the actual length of the line is 17 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.  

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72