Please provide explanation

≈ 51.5%

Step-by-step explanation:

Percentage gain is calculated as

% gain = × 100%

Here the total cost = $8000 + $2300 = $10300

gain = $15600 - $10300 = $5300, thus

% gain = × 100% ≈ 51.5%

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.  

a

step-by-step explanation:

strong negative correlation