Oi :)
1) There are 3 significant digits

2)
15 Mi/h = 22 ft/s
3)

4)
There are 4 significant digitis. Leter C
Answer:
2197 cubic centimeters
Step-by-step explanation:
13^3=2197
Answer:9
Step-by-step explanation:
Square root of 81 is9.
The answer is 40 miles per hour. If you divide 1200/30 you would get 40. Hope this helps!