Math

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The charges on a monthly water bill came to \$0.86 per cubic meter of water used, plus a service charge of \$4.49.
Last month Jeremy's water bill came to \$69.85, how many cubic meters of water had he used?

• Math -

charge = .86x + 4.49

if charge = 69.85

69.85 = .86x+4.49
.86x = 65.36
x = 76

• Math -

69.85 - 4.49 = 65.36

65.36 / 0.86 = 76 cubic meters

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