How do I evaluate?
Evaluate what?
e·val·u·ate
[əˈvalyəˌwāt]
VERB
form an idea of the amount, number, or value of; assess:
"when you evaluate any hammer, look for precision machining" · [more]
synonyms: assess · judge · gauge · rate · estimate · appraise · analyze · examine · get the measure of · size up · check out
mathematics
find a numerical expression or equivalent for (an equation, formula, or function).