1. (03.01 LC)
Which of the following sets represents the domain of the function shown? (5 points)
{(2, 3), (4, 7), (5, 9), (11, 6)}
{2, 4, 5, 11}
{3, 7, 6, 9}
{(3, 2), (7, 4), (9, 5), (6, 11)}
{2, 3, 4, 5, 6, 7, 11}
2.
(03.02 MC)
The function f(x) = 4.50x + 19 relates how much Sean pays to his scout club, f(x), to the number of patches, x, he earns in a month. What is the value and meaning of f(12)? (5 points)
$73.00; this is the amount Sean pays for earning 12 patches in a month.
$73.00; this is the amount Sean pays for 12 months of scout club.
$85.50; this is the amount Sean pays for earning 12 patches in a month.
$85.50; this is the amount Sean pays for 12 months of scout club.
3.
(03.03 MC)
Find the ordered pairs for the x- and y-intercepts of the equation 5x − 6y = 30 and select the appropriate option below. (5 points)
The x-intercept is (6, 0), the y-intercept is (0, –5).
The x-intercept is (0, 6); the y-intercept is (–5, 0).
The x-intercept is (5, 0); the y-intercept is (0, –6).
The x-intercept is (0, 5); the y-intercept is (–6, 0).
4.
(03.03 HC)
The table shows the outputs, y, for different inputs, x:
Input (x) 1 2 3 4
Output (y) 5 5 7 9
Part A: Do the data in this table represent a function? Justify your answer. (3 points)
Part B: Compare the data in the table with the relation f(x) = 2x − 8. Which relation has a greater value when x = 4? (2 points)
Part C: Using the relation in Part B, what is the value of x if f(x) = 34? (5 points)
(10 points)
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