Use the power of a power property to simplify the numeric expression. (9^1/4)^7/2

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

Ireally don't understand this, i'm really an idiot but i want to know how to figure this out. !

Write a problem to fit this equation 2k + 5 =29