Marshallian demand (dX1) is a function of the price of X1, the price of X2 (assuming two goods) and the level of income or wealth (m): Hicksian demand (hX1) is a function of the price of X1, the price of X2 (assuming two goods) and the level of utility we opt for (U):
David was thirty years old when he became king, and he reigned forty years. David was thirty years old when he began to reign, and he reigned forty years in all. David was thirty years old when he began to reign, and he reigned forty years. David was thirty years old when he became king, and he reigned forty years. David was thirty years old when he began to reign, and he reigned forty years. David was 30 years old when he began his reign; he reigned 40 years. David began to reign when he was 30 years old, and he reigned 40 years.
King Solomon is the son and successor of David. According to Encyclopaedia Britannica, he flourished in the mid-10th century BC, i.e. around 950 BC. The Good News Bible in its Outline Chart of Bible History places his reign around 970 to 931 BC or for 39 years.