Answer this correctlyand get brainliest

What is the reflection image of (5,-3) across the line y = -x?

The test scores of 32 students are listed below. construct a boxplot for the data set and include the values of the 5-number summary. 32 37 41 44 46 48 53 55 57 57 59 63 65 66 68 69 70 71 74 74 75 77 78 79 81 82 83 86 89 92 95 99

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.