Question

The table shows how the cost of hiring a plumber depends on how long the worktakes. Give the rule in words describing the relationship between the hours workedand the cost.

Answer 1

Given the table;

There is a linear relationship between cost of hiring a plumber and how long the work takes. This relationship is modelled as;

`c\left(t\right)=25t+40`

This shows that there is a fixed price of $40 charged and a price of $25 for each hour the work takes