11. Mary French uses gas to heat her home. She has accumulated the following information regarding her monthly gas bill and monthly heating degree-days. The heating degree-days value for a month is found by first subtracting the average temperature for each day from 65 degrees and then summing these daily amounts together for the month. Month February April Heating Degree-Days 1,900 600 Gas Bill $195 $78 The equation representing the relationship between the gas bill (Y) and heating d a. Y- $0.09X b. Y $24$0.09X c. Y $48 $0.09X d. Y $120 S0.09X s (X) is