To express the number of bracelets \( b \) that Tonia can make as a function of the number of hours \( h \) she spends making them, we can use the following function notation:
\[ b(h) = 11h \]
In this equation, \( b(h) \) represents the number of bracelets made, and \( h \) represents the number of hours spent making them. Since Tonia makes 11 bracelets each hour, the total number of bracelets is the product of the number of hours and the rate at which she makes them (11 bracelets per hour).