Scientists collected fallen acorns that each housed a colony of the ant species P. ohoensis and analyzed each colony's structure. For any of these colonies, if the colony has $\bm{x}$ worker ants, the equation $\bm{y}=0.67\bm{x}+2.6$, where $\bm{20}\leq\bm{x}\leq\bm{110}$, gives the predicted number of larvae, $\bm{y}$, in the colony. If one of these colonies has 58 worker ants, which of the following is closest to the predicted number of larvae in the colony?