Geometry, help me wit this bih real quick.

What is the value of the expression below? (81^2)^1/8

How many 3/8s are in 6 plz someone tell me now

4. (10.03 mc) the equation of line cd is y = −2x − 2. write an equation of a line parallel to line cd in slope-intercept form that contains point (4, 5). (4 points) y = −2x + 13 y = negative 1 over 2 x + 7 y = negative 1 over 2 x + 3 − 2x − 3