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Frankie’s electric bill total is $48 and contains three charges: a charge for electricity used, 5% tax on the charge for electricity used, and $6.30 in fees.

Which statements are true?

Choose exactly two answers that are correct.

A. The equation that represents the price, e, of the electricity is e + 0.05e + 6.30 = 48.

B. The equation that represents the price, e, of the electricity is 0.05e + 6.30 = 48.

C. The cost of the electricity before taxes or fees is $39.71.

D. The cost of the electricity before taxes or fees is $834.

Respuesta :

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A. The equation that represents the price, e, of the electricity is e + 0.05e + 6.30 = 48
C. The cost of the electricity before taxes or fees is $39.71. 

e + 5% of e + 6.30 = 48
e + 0.05e + 6.30 = 48
1.05e = 48 - 6.30
1.05e = 41.70
e = 39.71

39.71 + 5%(39.71) + 6.30 = 48
39.71 + 1.99 + 6.30 = 48
48 = 48

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