Answer:
$1.25 each
Step-by-step explanation:
just divide the total cost by number of teachers and MAGIC!!
The answer is 3. This is because the perimeter is 30 so 5x+5x+x-3+x-3 = 30. Thus you have 12x-6=30 so x = 3
Range is ] -20 , -10 [
both points are disclude according to the empty circle