Answer:
slope = - 
Step-by-step explanation:
note that BC is perpendicular to AB, hence the slope of BC is the negative reciprocal of the slope of AB
= -
= - 
I have a feeling it B but I don’t know maybe C
Answer:
The last one, I think
Step-by-step explanation:
You have 3*6=18ft of straight line. then you have the circumference of a circle with a radius of 3 which is 9p
So the perimeter is 18+9p=46.27 ft (to the nearest hundredth)