Given:

The function models the amount of money that Amy has in her savings after each hour of work.
The function models a linear relationship where "h" is the independent variable and represents the number of hours worked.
The coefficient of h, 8.5 represents the slope of the line, it is the payment per hour.
The constant in the relationship, 320, represents the initial amount in her account.
And the value of f(h) represents the total amount after working "h" hours.