Answer:
5
Step-by-step explanation:
d= √(5-1)^2+(1-4)^2
d= √4^2+(-3)^2
d= √16+9
d=√25
d=5
420 is the least common multiple for 21, 28, 35
this should be at leat twenty charcters
y = 11x + 4 is the answer