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Which expression is equivalent to square root of 8 x to the 7th power y to the 8th power end root ? Assume x is greater than or equal to 0

A
2 x squared y squared square root of x y squared end root
B
x y squared square root of 8 x cubed end root
C
4 x cubed y to the 4th power square root of x
D
2 x cubed y to the 4th power square root of 2 x
43
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Which equation is represented by the graph?

A
y is equal to 1 eighth e to the x th power
B
y is equal to 1 half e to the x th power
C
y is equal to 2 e to the x th power
D
y is equal to 8 e to the x th power
44

Which conclusion can be drawn from this graph?

A
This number cube must be fair because each outcome of rolling a 1 , 2 , 3 , 4 , 5 , or 6 has the same probability of occurring.
B
There is a 20 percent chance of rolling a 3 with this die.
C
The long-run relative frequency of rolling a 3 appears to be about 0 point 1 7 .
D
Because the probabilities on the left part of the graph fluctuate so much, we cannot conclude that this is a fair number cube.
45

Which statement is NOT true?

A
The arm spans for Class A have less variability than the arm spans for Class B.
B
The arm spans for Class A are roughly symmetric, while those for Class B are skewed left.
C
The mean arm span appears to be similar for the two classes.
D
The arm spans for Class B have more variability than the arm spans for Class A.
46

Based on the dotplot of the simulation results and the random sample from last month’s new driver’s licenses, which conclusion can be drawn?

A
If we continued to take more samples of 10 teenagers, the center of the distribution would shift to 6 .
B
There is about an 8 percent chance that 4 or fewer teenagers smiled for their photo. This is not unusual and is not convincing evidence that the true probability is less than 60 percent .
C
The actual proportion of teenagers who do not smile is only 8 percent .
D
It is clear that exactly 6 out of 10 teenagers will smile in their driver’s license photo.
47

Which of the following best describes the shape of the distribution?

A
bimodal symmetric
B
skewed to the right
C
unimodal symmetric
D
skewed to the left
48

Assuming only positive domain values, which statement is true of the graph that represents the total cost, y , in dollars for shipping items that weigh x ounces?

A
The graph is discontinuous at x is equal to 5 , x is equal to 10 , and x is equal to 15 .
B
For every 1 -ounce increase in weight, the total shipping cost increases by 3 point 7 5 dollars .
C
The left side of each horizontal interval is a closed circle, and the right side is an open circle.
D
The range values for the set of the data are 10 , 14 , 17 , and 21 .
49

Which of these correctly describes the shape of the distribution of water bills?

A
skewed right
B
uniform
C
skewed left
D
roughly symmetric
50

Which of the following is a true statement comparing the water bills of the two neighborhoods?

A
More homes on Pine Road had water bills under $150 than on Front Street.
B
The same number of homes on both streets had water bills between $175 and $200.
C
More homes on Pine Road had water bills above $200 than on Front Street.
D
More homes on Front Street had water bills above $225 than on Pine Road.

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N/A — Exam Answers — Algebra II