As x→∞, does a log graph or x² graph go up faster?

As x→∞, does an exponential graph or x⁴ graph go up faster?

Which is steeper, 2^x or 3^x?
Remember the coefficient (1000) is VERY small when x→∞ and does not need to be considered.

As x→∞, does a linear graph or square root graph go up faster?