Question

The temperature at 12 noon was 10 degree celecious above zero.If it decrease at the rate of 2 degree celecious per hour ,at what time will the temperature be 8 degree celcious below zero? 2)If a and b are any two integers and the operation is defind as a b=2a+3b-7,then find the value of (-2) (-3)

Answer 1

1)12noon - 10℃
1 pm - 8℃
5pm - 0℃
9pm - -8℃
2) (-2) (-3)= -6-9-7=-6-16=-22