Answer:
B
Step-by-step explanation:
Answer:
8) answer=5 9)answer=15
Step-by-step explanation:
all you have to do is replace in the following formula

Where
X1: is the first number of the first point
Y1: is the second number of the first point
X2: is the first number of the second point
Y2: is the second number of the second point
you replace in the formula and solve
I attach solution
Answer:
c
Step-by-step explanation:
Answer:
3000,
Step-by-step explanation:
5 or above round up, 4 and below keep it the same