The subject of a formula is the variable that is being worked out. It can be recognised as the letter on its own on one side of the equals sign. For example, in the formula for the area of a rectangle ...
A plumber charges £40 for a call out, and an extra £18 for every hour. How long did a job that cost £130 take? The formula for this plumber's charge is: \(T = £60 + £20 \times h\) where \(T\) is the ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback