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Which trigonometric function best models this data?

A
y is equal to 1 point 8 7 sine open paren 0 point 2 9 x plus 6 point 1 3 close paren plus 4 point 7 9
B
y is equal to 1 point 8 7 sine open paren negative 0 point 2 9 x plus 4 point 7 9 close paren plus 6 point 1 3
C
y is equal to 1 point 8 7 sine open paren 0 point 2 9 x plus 4 point 7 9 close paren plus 6 point 1 3
D
y is equal to 1 point 8 7 sine open paren negative 0 point 2 9 x plus 6 point 1 3 close paren plus 4 point 7 9
43
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Which is the diagonal matrix containing these elements?

A
the 5 by 5 matrix, row 1, column 1, 16 column 2, 0 column 3, 0 column 4, 0 column 5, 0 row 2, column 1, 0 column 2, negative 8 point 7 column 3, 0 column 4, 0 column 5, 0 row 3, column 1, 0 column 2, 0 column 3, 5 point 4 column 4, 0 column 5, 0 row 4, column 1, 0 column 2, 0 column 3, 0 column 4, 1 point 3 column 5, 0 row 5, column 1, 0 column 2, 0 column 3, 0 column 4, 0 column 5, negative 6 point 9
B
the 5 by 5 matrix, row 1, column 1, 16 column 2, negative 3 point 7 column 3, 6 column 4, 1 point 7 column 5, negative 8 point 8 row 2, column 1, 0 column 2, negative 8 point 7 column 3, negative 4 point 1 4 column 4, 1 column 5, 7 row 3, column 1, 0 column 2, 0 column 3, 5 point 4 column 4, negative 9 column 5, negative 3 row 4, column 1, 0 column 2, 0 column 3, 0 column 4, 1 point 3 column 5, 5 row 5, column 1, 0 column 2, 0 column 3, 0 column 4, 0 column 5, negative 6 point 9
C
the 5 by 5 matrix, row 1, column 1, 16 column 2, 0 column 3, 0 column 4, 6 column 5, 0 row 2, column 1, 0 column 2, negative 8 point 7 column 3, 0 column 4, 0 column 5, 5 row 3, column 1, 0 column 2, 0 column 3, 5 point 4 column 4, 0 column 5, 0 row 4, column 1, 2 column 2, 0 column 3, 0 column 4, 1 point 3 column 5, 0 row 5, column 1, 0 column 2, 1 column 3, 0 column 4, 0 column 5, negative 6 point 9
D
the 5 by 5 matrix, row 1, column 1, 16 column 2, 0 column 3, 0 column 4, 0 column 5, 0 row 2, column 1, negative 6 column 2, negative 8 point 7 column 3, 0 column 4, 0 column 5, 0 row 3, column 1, 5 column 2, 43 column 3, 5 point 4 column 4, 0 column 5, 0 row 4, column 1, 3 column 2, 2 column 3, 1 point 2 column 4, 1 point 3 column 5, 0 row 5, column 1, negative 9 point 9 column 2, 7 column 3, negative 6 point 8 column 4, negative point 0 5 column 5, negative 6 point 9
44

What is the domain of the function?

A
x is less than 0
B
all real numbers
C
x is greater than 0
D
x is less than 1
45

Which function represents the value of a computer after t years?

A
f of t is equal to 1,600 times 0 point 8 to the t th power
B
f of t is equal to 1,600 minus 320 t
C
f of t is equal to 1,600 minus 226 point 1 6 t
D
f of t is equal to 1,600 times 0 point 2 to the t th power
46

What are the domain and range of the piecewise function?

A
domain: negative 3 is less than or equal to x comma x is less than or equal to 1 or 4 is less than x comma x is less than 8 range: negative 6 is less than y comma y is less than negative 2 or y is greater than negative 2
B
domain: x is greater than or equal to negative 3 range: y is greater than negative 6
C
domain: negative 6 is less than x comma x is less than negative 2 or x is greater than negative 2 range: negative 3 is less than or equal to y comma y is less than or equal to 1 or 4 is less than y comma y is less than 8
D
domain: x is greater than negative 6 range: y is greater than or equal to negative 3
47

What is the round trip distance in miles from city 1 to city 3?

A
30
B
15
C
70
D
50
48

Using the least-squares regression method, which is the line of best fit?

A
line A
B
line b
C
line c
D
None of the lines is a good fit for the data.
49

Which of the following accurately lists all of the discontinuities for the graphed function?

A
jump discontinuities at x is equal to 0 and x is equal to 8 ; point discontinuity at x is equal to negative 2
B
jump discontinuity at x is equal to 0 ; point discontinuities at x is equal to negative 2 , x is equal to 3 , and x is equal to 8
C
jump discontinuity at x is equal to 0 ; point discontinuities at x is equal to negative 2 and x is equal to 8
D
jump discontinuity at x is equal to 0 ; point discontinuity at x is equal to 8
50

In the exponential regression equation, what does the value of b indicate?

A
14 point 9 percent of the remaining contaminants are removed from the water sample after each round of filters.
B
14 point 9 percent of the contaminants remain in the water sample after each round of filters.
C
6 point 3 percent of the remaining contaminants are removed from the water sample after each round of filters.
D
6 point 3 percent of the contaminants remain in the water sample after each round of filters.

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N/A — Exam Answers — Algebra II