First we need to put this information into an equation. \(x\) is the number of hours they hired the van for. This is what we have to find. Their total bill will be £17 plus £6 times \(x\) hour.

for example \(3x + 5 = 11\) Solving an equation means finding the value or values for which the two expressions are equal. This means equations are not always true. In the example above ...