Asked by Sydney
A utility company charges $67.65
plus $1.1917 per therm for gas usage in excess of 50 therms. Last winter, one homeowner's bill ranged from a low of
$196.35 to a high of $214.23.
Over what range did gas usage vary (in therms)?
plus $1.1917 per therm for gas usage in excess of 50 therms. Last winter, one homeowner's bill ranged from a low of
$196.35 to a high of $214.23.
Over what range did gas usage vary (in therms)?
Answers
Answered by
Steve
well, for usage over 50 therms, the bill for x therms is
y = 67.65 + 1.1917(x-50)
So, plug in your y values and solve for the x values.
y = 67.65 + 1.1917(x-50)
So, plug in your y values and solve for the x values.
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