Multiplication is the process of multiplying. Jay lost 30 pounds in a period of 6 months.What is multiplication?Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.A.) The newly recorded temperature in January will be six times the temperature in February, therefore, we can write,January = 6 × February = 6×(-3°F) = -18°FHence, the newly recorded temperature in January will be equal to -18°F.B.) Change in water level on each day of the drought was equal to -4 inches, while the drought lasted for 1 week(7days), Thus, the net change in water level can be written as,net change = 7 × -4 = -28inchesHence, the net change in the water level during the drought was equal to -28 inches.C.) Jay went on a diet for six months and lost 5 pounds each month, therefore, the net change in the weight will be equal to,Net Change = 6 × 5 = 30 poundsHence, Jay lost 30 pounds in a period of 6 months.Learn more about Multiplication: