2^-e ≤ 5^-e

Fire ant population

0 ≤ 2650e^1.15t ≤ ∞

0 < x ≤ 4, log x + log (x + 21) ≤ 2

x ≥ 8, log₂ x + log₂ (x − 6) ≥ 4