3. A stick t metre long is broken into parts. One part is 2 metres long. a) What is the length of the other part?
b) If the other part is 3 metres long, write an
equation and use it to find the value of t.
A boy weighs s kilograms and his father weighs 70 kilograms.
a) What is their total weight?
b) If their total weight is 100 kilograms, write an
equation and use it to find the value of s.​

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?