Answers 26-27 CFISD Algebra II B CRRegression Models

Regression Models — Cumulative exam Answers

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Eighty members of a bike club were asked whether they like touring bikes and whether they like mountain bikes. A total of 70 like touring bikes, 47 like mountain bikes, and 5 do not like either. What are the correct values of a, b, c, d, and e?

a = 42, b = 28, c = 33, d = 5, e = 10

a = 42, b = 5, c = 28, d = 33, e = 10

a = 5, b = 42, c = 28, d = 10, e = 33

a = 5, b = 10, c = 28, d = 33, e = 42

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What are the solutions to the quadratic equation 4(x + 2)2 = 36

x = −11 and x = 7

x = −7 and x = 11

x = −5 and x = 1

x = −1 and x = 5

What is the greatest common factor of 4xy2 and 20x2y4?

4xy

4xy2

24xy

24xy2

Steve determined the number of states each of his friends has visited.Which statement must be true according to the box plot?

The data is skewed left and shows that half of Steve’s friends have visited 4 to 10 states.

The data is skewed left and shows that half of Steve’s friends have visited 10 to 40 states.

The data is skewed right and shows that half of Steve’s friends have visited 4 to 10 states.

The data is skewed right and shows that half of Steve’s friends have visited 10 to 40 states.

The table shows the height, in meters, of an object that is dropped as time passes until the object hits the ground.A line of best fit for the data is represented by h = –21.962x + 114.655. Which statement compares the line of best fit with the actual data given by the table?

According to the line of best fit, the object would have hit the ground 0.6 seconds later than the actual time the object hit the ground.

According to the line of best fit, the object was dropped from a lower height.

The line of best fit correctly predicts that the object reaches a height of 40 meters after 3.5 seconds.

The line of best fit predicts a height of 4 meters greater than the actual height for any time given in the table.

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Regression Models — Cumulative exam Answers

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