Round to the nearest place value and write in scientific notation 1,402,941,487 a) 1×10^9
b) 14×10^9
c) 1.5×10^8
d) 1×10^8​

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.