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Linear Functions 3
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Result
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Let the function f(x)=3x+45 represent the score of Betty, a marketing agent, in an exam after attending x hours of a seminar.
x
Let the function f(x)=3x+45 represent the score of Betty, a marketing agent, in an exam after attending x hours of a seminar.
Choose your answer to each question.
1. What is the value of   f(0)?
48
45
0
None of the choices
Answer: 45
2. What is the value of   f(8)?
69
56
53
None of the choices
Answer: 69
3. What is the value of   f(16)?
61
64
93
None of the choices
Answer: 93
4. By how much will Betty's score increase or decrease for every additional hour she attends the seminar?
3-unit increase
3-unit decrease
45-unit increase
45-unit decrease
Answer: 3-unit increase
5. What would have been her score if she did not attend the seminar at all?
0
3
48
None of the choices
Answer: None of the choices; 45
6. If the seminar goes on for 3 days (8 h per day), what is her highest possible score if she does not miss any part of the seminar?
117
69
54
None of the choices
Answer: 117
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