The first question is probably around 12 cm. It looks to be about half of like AC. Then the third question would be a 90° angle I do belive
The answer is 2( x - 4 ) = 9
1. 1,728
2. You can't tell because it doesn't say the amount one serving will serve, and how many servings she is serving, and how many people come to her party. Sorry!!
I hope I helped with the first one!
