The Distance Between Two Planets Is Approximately $4.2 \times 10 ^ { 7 }$

Multiple Choice

The distance between two planets is approximately $4.2 \times 10 ^ { 7 }$ miles. Use scientific notation to express this distance in feet. (5,280 feet = 1 mile.)

A) $2.2586 \times 10 ^ { 13 }$ ft
B) $2.2176 \times 10 ^ { 11 }$ ft
C) $2.2306 \times 10 ^ { 9 }$ ft
D) $2.218 \times 10 ^ { 12 }$ ft
E) $2.0866 \times 10 ^ { 10 }$ ft