Unit Test — Cumulative exam Answers
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21
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Cheryl has $56 and wants to buy as many notebooks as she can to donate to her school. If each notebook costs $1.60, which inequality shows n, the maximum number of notebooks she can buy with her money?
A
1.6 n greater-than-or-equal-to 56
B
1.6 n less-than-or-equal-to 56
C
56 n less-than-or-equal-to 1.6
D
56 n greater-than-or-equal-to 1.6
22
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If m 0, the graph of y = mx + b does not pass through which quadrant?
A
Quadrant IB
Quadrant IIC
Quadrant IIID
Quadrant IV23
Which relation below represents a one-to-one function?
A
A 2-column table has 5 rows. The first column is labeled x with entries 5, 14, 7, 13, 12. The second column is labeled f (x) with entries 26, 197, 50, 170, 197.
B
A 2-column table has 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f (x) with entries 5, 2, 1, 2, 5.
C
A 2-column table has 5 rows. The first column is labeled x with entries 7.25, 7.5, 7.75, 8, 8.5. The second column is labeled f (x) with entries 11, 13, 15, 13, 11.
D
A 2-column table has 5 rows. The first column is labeled x with entries 9, 2, 4, 1, 5. The second column is labeled f (x) with entries 12, 7, 9, 13, 5.
24
A polynomial function has a root of –6 with multiplicity 3 and a root of 2 with multiplicity 4. If the function has a negative leading coefficient and is of odd degree, which could be the graph of the function?
A
mc014-1.jpg
B
mc014-2.jpg
C
mc014-3.jpg
D
mc014-4.jpg
25
Harlon wrote the equation to find the area of a rectangle that has a length of and a width of 18. He solved for x and got Which of the following is an equivalent equation for x?
A
x = plus-or-minus StartRoot StartFraction uppercase A minus 18 Over 18 EndFraction EndRoot
B
x = plus-or-minus StartRoot StartFraction uppercase A + 18 Over 18 EndFraction EndRoot
C
x = plus-or-minus StartRoot uppercase A minus 36 EndRoot
D
x = plus-or-minus StartRoot uppercase A + 36 EndRoot
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