In 2010, the United States consumed 94.58 quadrillion (10 15 ) Btu of energy from renewable and

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In 2010, the United States consumed 94.58 quadrillion (1015) Btu of energy from renewable and nonrenewable sources. It used 79.44 quadrillion Btu more from nonrenewable sources than from renewable sources.

(a) Write a system of equations whose solution gives the consumption of energy from renewable and nonrenewable sources (in quadrillion Btu). 

(b) Solve the system of equations. 

(c) Is your system consistent or inconsistent? If it is consistent, state whether the equations are dependent or independent.

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