Pb is a line segment on a number line. it has endpoints at -2 and 12. what is the coordinate of its midpoint

The x-coordinate of the midpoint is the mean of the two given points:

midpoint = (-2 + 12) / 2, or 10/2, or 5. Notice that this 5 is 7 units to the right of -2 and 7 units to the left of 12, confirming that 5 is indeed the midpoint.

I Know the answer because I am in k12 too.

The answer is 37.5%

Step-by-step explanation:

$80 - $50 = $30

$30 * 100 / $ 80 = 37.5%

37.5% of decrease.