add them together then divide by 5
81 +86 +81 +76 +71 = 395
395/5 = 79
your average was 79
Answer:
use photo math it's great
Answer:
<h3>y=-3x+15</h3>
Step-by-step explanation:

Substitute values into point slope form

The slope of the current line is -2/7. To find the slope of the line perpendicular to it, find the negative reciprocal of the slope. So it would be 7/2. The y intercept or the b would remain the same so the equation would be y=7/2x+8. Hope this helps.
6/9*m cause I think you have to add or multiply but if you multiply your answer is 5/16