Who is correct Julie or Jeremy

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.

The angle of elevation from point a to the top of a cliff is 38 degrees . if point a is 80 feet from the base of the cliff , how high is the cliff ?

1/4x+5=3/4. i can't get access to the answer to this question! and, my request on "contact us" will not go