#### Answer

distance travelled=speed$\times$time
$time=\frac{distance}{speed}\leq25$
$0.08$ miles/minute

#### Work Step by Step

distance travelled=speed$\times$time
to be at the park in at most 25 min, we need to have
$time=\frac{distance}{speed}\leq25$
to solve the problem you need to have
$\frac{distance}{25}\leq speed$
because the distance is equal to 2 miles, you can conclude that $\frac{2}{25}\leq speed$
Simplify: $0.08\leq speed$
this means that he needs to run at a speed greater than $0.08$ miles/minute