Answer:
T = 25 + 12 * h
Step-by-step explanation:
To find the rate of the tuner it is necessary to go to an equation:
First would be the full rate that has a value of 25. And for every hour that is 12.
That is to say:
T = 25 + 12 * h
h being the hours it takes to tune the piano. And this equation would reprehend what the piano tuner