At the U.S. Junior National Championship, Allison received a gold medal for completing the 100 m freestyle in thirty-nine and eighty-two hundredths seconds. How is Allison’s time written in expanded notation?

A (3 x 10) + (9 x 10) + (8 x 0.1) + (2 x 0.01)

B (3 x 10) + (9 x 1) + (8 x 0.1) + (2 x 0.01)

C (3 x 0.1) + (9 x 0.01) + (8 x 0.1) + (2 x 0.01)

D (39 x 1) + (8 x 0.01) + (2 x 0.001)

The U.S. Women's Gymnastic team had a score of forty-one and seventy-nine hundredths on the balance beam at the 2018 World Gymnastics Championship. How is the score written in expanded notation? 

A (41 x 1) + (7 x 0.01) + (7 x 0.01) 

B (4 x 10) + (1 x 10) + (7 x 0.1) + (9 x 0.01)

C (4 x 10) + (1 x 1) + (7 x 0.1) + (9 x 0.01)

D (39 x 1) + (8 x 0.01) + (2 x 0.001)

Marlow has $82.92 in her savings account. Which expression shows the expanded notation of Marlow’s savings?

A (8 x 10) + (2 x 1) + (2 x 0.1) + (9 x 0.01)

B (8 x 10) + (2 x 1) + (9 x 0.1) + (2 x 0.01)

C (8 x 1) + (2 x 1) + (9 x 0.1) + (2 x 0.01)

D(8 x 10) + (2 x 1) + (2 x 0.1) + (2 x 0.01)