Question: Boston Edison computes the monthly bill as a linear function of kilowatt hrs (kWh) of use. The bill is $97.34 for 1,l70 kWh and $123.l7

Boston Edison computes the monthly bill as a linear function of kilowatt hrs (kWh) of use. The bill is $97.34 for 1,l70 kWh and $123.l7 for 1,420 kWh.

(a) Compute the cost, y, in terms of x kWh used. Is this formula usable for all x? Explain.

(b) What is the bill for l,6l3 kWh?

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