When you are 18 years old you have a hair that is 16 centimeters long, and your hair grows about 12 centimeters each year. Let  H(t)  be the length, in centimeters, of that hair t years after age 18. (a) Find a formula that gives H as a linear function of t. How long will it take for the hair to reach a length of 116 centimeters? (Round your answer to two decimal places.)

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