Unit Test — Unit test Answers
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21
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Solve . Which of the following must be true about the inequality and the resulting graph? Select three options.
A
n less-than-or-equal-to negative 24
B
n greater-than-or-equal-to negative 24
C
The circle is open.D
The circle is closed.E
The arrow points right.22
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Which inequality has an open circle when it is graphed on a number line?
A
x greater-than three-fifths
B
StartFraction 4 over 7 EndFraction greater-than-or-equal-to x
C
x less-than-or-equal-to 12
D
x greater-than-or-equal-to negative 6
23
A mobile phone carrier charges an extra fee if a customer uses more than 500 minutes each month. Tom has already used 230 minutes this month. Which inequality can be used to determine how many more minutes Tom can use this month without going over the 500-minute limit?
A
230 + m greater-than 500
B
230 + m greater-than-or-equal-to 500
C
230 + m less-than 500
D
230 + m less-than-or-equal-to 500
24
Vera claimed the solution set on the number line represents the inequality .Which error did Vera make?
A
Vera wrote the inequality with the variable on the left side of the relation symbol.B
Vera wrote a relation symbol that does not represent the direction of the ray.C
Vera selected an inequality that does not include –79 in its solution set.D
Vera used the wrong number in her inequality.25
Which inequality represents the sentence below?The difference of a number and one and four tenths is more than nine and seventy-eight hundredths.
A
p minus 1.4 greater-than 9.78
B
p minus 1.4 less-than 9.78
C
1.4 minus p greater-than 9.78
D
1.4 minus p less-than 9.78
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