Use Scientific Notation to Solve the Problem $1.2 \times 10 ^ { 7 }$

Multiple Choice

Use scientific notation to solve the problem.
-How many liters of oil are needed to supply the electrical energy needs of an average U.S. home for 7 weeks? Assume that the energy released by burning one liter of oil is $1.2 \times 10 ^ { 7 }$ joules and that the
Electrical energy used daily in an average U.S. home is $5 \times 10 ^ { 7 }$ joules. Round your answer to the
Nearest tenth of a liter.

A) 11.8 liters
B) 1.7 liters
C) 29.2 liters
D) 204.2 liters