How would four billion, nineteen million, three hundred thirty-seven thousand, two be written in standard form? A. 4,190,337,020
B. 4,019,337,020
C. 4,019,30,702
D. 4,019,337,002

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

10 points? me . its important ‼️‼️

Savannah talked for 6 minutes on the phone. catherine talked for n minutes. catherine talked 3 times as long as savannah. how long did nathan talk?