As part of a market research project, you survey six random people to see how much gas per week they would buy at various prices. The data you collect is in the accompanying table. What is the total demand in your survey for gas at $1.50 per gallon? Quantity of Gallons of Gas Demanded Per Week Price per gallon of gasoline Marty Zain Doc Mikael $1.50 Zoya Amirah 10 15 6 20 $2.00 20 6 8 12 3 18 $2.50 19 5 6 9 1 14 $3.00 17 4 4 6 0 10 $3.50 15 2 3 0 4 12 O 51 gallons O 77 gallons O 38 gallons O 22 gallons