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**Snowboarder** The number of minutes it takes for a worker to assemble a particular item depends on his/her experience in performing the job. The average assembly time can be modelled by the following function *A(t)*= 20 + 3t/t + 1 , where *t *=number of days on the job, and *A(t)* is measured in minutes. An expert can assemble an item in 3 minutes. A worker is said to be proficient (very good) if they can assemble an item in 5 minutes.

Evaluate A(t) for t = 0 and as t -> +infinity. Interpret your answer. State practical domain for this function

. How many days(weeks) does it take for a worker to get proficient?