Question

Over or under. 4^x=70. 70 is between _ and _. So, x is between _ and _.

Answer 1

4^3 = 64 and 4^4 = 256. Since 64 < 70 < 256, 70 is between 4^3 and 4^4. Therefore x is between 3 and 4 (x ≈ ln70/ln4 ≈ 3.0646).