Answer:
D is the answer.
Answer: Its (5,-2)
Step-by-step explanation: When you reflect across the x-axis the y value changes.
Step-by-step explanation:
This is just a perfect square
C
blue+green=15
blue is 5
5 to 15
area of a triangle
1/2 base ×height
1/2×15×8.5
=63.75cm ^2