Sharon worked hard for a long time to save the money for a new car. She has budgeted between $15,000 and $20,000 for the new car plus the cost of gas for a year. Let x represent gas mileage. Which compound inequality represents the gas mileage that a $12,000 car can get and still fit in her budget if gas costs $4 per gallon and she drives 15,000 miles a year? 15,000 ≤ 12,000 + 415,000 less than or equal to 12,000 plus 4 left-parenthesis StartFraction 15,000 over x EndFraction right-parenthesis less than or equal to 20,000. ≤ 20,000 15,000 < 12,000 + 415,000 less than 12,000 plus 4 left-parenthesis StartFraction 15,000 over x EndFraction right-parenthesis less than 20,000. < 20,000 15,000 ≤ 12,000 + x15,000 less than or equal to 12,000 plus x left-parenthesis StartFraction 15,000 over 4 EndFraction right-parenthesis less than or equal to 20,000. ≤ 20,000 15,000 < 12,000 + x15,000 less than 12,000 plus x left-parenthesis StartFraction 15,000 over 4 EndFraction right-parenthesis less than 20,000. < 20,000