What is the place value of the 8 in 281,480,100 ?
what is the place value of the number 9 in 89,170,326

How to solve it and what thw answer is

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip