Find all values of $t$ such that $8t^2 \le 3-10t$.
8t^2 ≤ 3 - 10t rearrange as
8t^2 + 10t - 3 ≤ 0 factor
This graph may help :
https://www.desmos.com/calculator/tmxfctalnk
The values that make this true are t = [ -1.5, 0.25 ]
