Help for Exercises 54-57 on page 37
Exercises 54-57 show how a problem can be solved by first solving a simpler problem. The first step in solving any
problem is to determine what you are asked to find and what information you need to do so. Next, determine what
information you are given and whether it is sufficient.
To begin Exercises 54-57, carefully read the problem and the verbal model. You are asked to find out how fast Jeff
was driving. Notice that this is not one of the expressions in the verbal model. However, assigning labels to
the given verbal model and solving the resulting algebraic model will allow you to find how many miles over the speed
limit Jeff was driving. Since you also know the speed limit, you can determine how fast Jeff was driving.