A weather station records the temperature changes in a hill station over several days. During the night, the temperature decreases by \(4^\circ C\) per hour for \(5\) hours. During the day, the temperature rises by \(4^\circ C\) per hour for \(2\) hours. Students represent these temperature changes using integer and integer multiplication to understand how positive and negative integers are used in real-life situations.
Answer the following questions:
(a) What integer represents the temperature decrease per hour?
(b) What is the total temperature change during the \(4\)-hour decrease? \(^\circ C\)
(c) What is the total temperature change during the \(5\)-hour increase? \(^\circ C\)
(d) What is the net temperature change after both periods?