Respuesta :
72 hours because if you keep counting up by NInes 8 times you will hit 72
Answer:
72 hours
Step-by-step explanation:
Speed: 1/9 mph
After 9 hours: 1/9 * 9 = 1 mile
9 hours = 1 mile
9(8) hours = 1(8) miles
72 hours = 8 miles
It will take the spider 72 hours to travel 8 miles
Hope this helps :)