She needs to have 4 hours a week for the next 7 weeks.

To make this true we know need 4x, x as for week (time).

We also need to have it done with 7 weeks, so we will need 7 weeks x 7 days which would be 49 days total.

Now to put it together,4(x) and place the number of weeks to get the total number of hours. Example on week 7 hour number of hours she played is (4*7)=28 hours total.

f(x) = 4x + 14 is the function.

14 is from the first week. Therefore, that’s the function of the total hours she played.