Question

$\% \sqrt{please \: explain \: 3rd \: and \: \: 5th \: question }$
Why we multiplied whole equation by -1?
Spam answers will be reported. Your answers will be removed.​

Answer 1

Answer:

The temperature at 12 noon was 10°C above

zero. If it decreases at the rate of 2°C per hour

until midnight, at what time would the

temperature be 8°C below zero? What would be

the temperature at midnight?