Answer:
i think its cancellation the others don't make sense.
Step-by-step explanation:
The slope is -3x i think
just a tip there’s this website (i think there’s an app too?). allied khan academy it’s basically for school and there’s lots of videos of what you’re doing
30=1/2 inch
60=1/2x2=1 inch
90=1/2x3=1 1/2
shortest side is 1/2 inch, medium side is 1 inch, longest is 1 1/2
2n=n-5 subtract n from both sides
n=-5
check...
2(-5)=(-5)-5
-10=-10
