A is 23.4 and b should be k point at 26
36. (-)•(-)=(+) 3•12=36 therefore the answer is 36
100 = 40 + 3x
Subtract 40 from each side
60 = 3x
Divide each side by 3
20 = x
The highest price of a sweatshirt can be $20
100 = 40 + 3(20)
You should be able to set up a proportion between the sides something like (18+x)/x=(56+21)/56
X=3 y=5 hope this helped :)