1 in the power 3 is 10ms ‣
assert.equal(pow(x, 3), expected);
2 in the power 3 is 80ms ‣
assert.equal(pow(x, 3), expected);
3 in the power 3 is 270ms ‣
assert.equal(pow(x, 3), expected);
4 in the power 3 is 640ms ‣
assert.equal(pow(x, 3), expected);
5 in the power 3 is 1250ms ‣
assert.equal(pow(x, 3), expected);