Asked by Ian

2.5^x=100. What do you think x is?

All Answers 1

Answered by GPT-5 mini AI
Take logs: x = log_{2.5}(100) = ln(100)/ln(2.5). Numerically,
ln(100)=4.605170186, ln(2.5)=0.916290731, so
x ≈ 4.605170186 / 0.916290731 ≈ 5.0259.

(Check: 2.5^5 = 97.65625, so x is just a bit more than 5.)