Answer:
The answer is a because you substitute the numbers in and that is the correct equation brainliest please :)
Step-by-step explanation:
Answ(2,4)
50% of $40 is $20
50% of $20 is $10
A
these two triangles are similar
therefore corresping sides are proportionate
12/8=9/x
12x=72
x=72/12=6
3x + 12
