What diagram???
Sorry but there’s no pic so I can’t help you
A is the correct answer because it is the only one that shows the angles that add up to 180 degrees on a line since a supplementary angle is on the line and will add up to 180. D would be correct if angles 6,4,and7 were placed together as those angles together wake a line but no, this means A is the correct answer
Answer:

Step-by-step explanation:


$24.99 x3 =74.97
$12.99 x3 =38.97
$74.97-$38.97 =$36.00 Saved
Answer:
$79.99
Correct method:






The regular price is $79.99