Rhia is using the above equation to investigate the carbon footprint, ccc, in kilograms of carbon dioxide (co_2)(co 2 )left parenthesis, c, o, start subscript, 2, end subscript, right parenthesis emissions, for her morning commute, during which sss miles are by subway and bbb miles are by bus. how many kilograms of co_2co 2 c, o, start subscript, 2, end subscript per mile does the bus portion contribute to rhia's carbon footprint?

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0.2 Kg

Explanation: -

The equation used by Rhia for the carbon footprint measurement is

C = 0.2 B + 0.1 S

where S miles are by subway, B miles by bus and C is Kg of carbon dioxide.

From the equation we see the coefficient of B is 0.2.

Thus 0.2 Kg of carbon dioxide per mile the bus portion contributes to Rhia's carbon footprint.

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