Question

If one-fourth of 2^30 is equal to 2^x, what is x?

Answer 1

23

Explanation:

Answer 2

28

Explanation:

1/4 can be rewritten as 1 / (2^2)

or 2^-2.

using the 2nd form,

we have 2^-2 * 2^30 = 2^x

By exponent rule

2^28 = 2^x

So we can observe now that x = 28