Write an equation in slope-intercept form to model the following situation. Then solve the equation. A skating rink charges a one-time group rate of $12.50 plus a fee to rent each pair of skates. A family rents 6 pairs of skates and pays a total of $39.50. What was rental fee for a pair of skates?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.