Graphing Exponential Equations

A group of $5$ bees are buzzing around on the sidewalk. Their movement can be represented by a function where $s$ is their placement on the sidewalk in feet and $t$ is the time at that moment in seconds. Their functions are: $$\begin{cases} s(t)=3t^2+4t-5\\ s(t)=4\cos(t)\\ s(t)=e^{3t^2}\\ s(t)=\frac{1}{4t^3}\\ s(t)=e^{\sin t}-2^t \end{cases}$$ After half a second, where could you place your foot in order to not step on a bee?