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Linear Functions 1
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Given the function   f(x)=75x, where   f(x) represents the number of words typed by a boy at a given time and x represents the number of minutes. Determine and interpret each indicated value. Choose your answer:

1.   f(0)
He can type 0 words in 0 min.
He can type 75 words in 0 min.
He can type 0 words in 75 min.
None of the choices
Answer: He can type 0 words in 0 min.
2.   f(1)
He can type 1 word in 1 min.
He can type 75 words in 75 min.
He can type 75 words in 1 min.
None of the choices
Answer: He can type 75 words in 1 min.
3.   f(2)
He can type 225 words in 2 min.
He can type 150 words in 2 min.
He can type 75 words in 2 min.
None of the choices
Answer: He can type 150 words in 2 min.
4.   f(3)
He can type 225 words in 3 min
He can type 300 words in 3 min.
He can type 375 words in 3 min.
None of the choices
Answer: He can type 225 words in 3 min.
5.   f(10)
He can type 75 words in 10 min.
He can type 750 words in 10 min.
He can type 7500 words in 10 min.
None of the choices
Answer: He can type 750 words in 10 min.
6.   f(14)
He can type 1475 words in 14 min
He can type 1400 words in 14 min.
He can type 1050 words in 14 min.
None of the choices
Answer: He can type 1050 words in 14 min.
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