Up to the vote
point p(−3.20, −6.05) is a reflection across the x-axis of which of the following points?
(−6.05, −3.20)
(−3.20, 6.05)
(3.20, −6.05)
(6.05, 3.20)

Drawing a picture always helps with these questions! If you plot the point P(-3.20, -6.05), it would be in the third quadrant. If the reflection is over the x-axis, it will be in the second quadrant just above the third. 
We know that the second quadrant has negative x-coordinates and positive coordinates so your answer would be: (-3.20, 6.05)

The answer for this question is 80

4should be the last one n=4