If $$f\left(x\right)=k\left(x-2\right)^4,\ $$ where $$k$$ is positive, what is the effect on the graph of f(x) as k increases?

The graph of f(x) is stretched vertically.

The graph of f(x) is shifted up.

The graph of f(x) is shifted down.

The graph of f(x) is stretched horizontally.

The graph of the function is shown below. Describes the function on that interval.

Decreasing: (-2, 0) Increasing: (0, 4) Positive: (-4, -1) Negative: (0, 2)

Decreasing: (0, 2) Increasing: (-2,0) Positive: (0, 4) Negative: (-4, -1)

Decreasing: (0, 2) Increasing: (-2,0) Positive: (-4, -1) Negative: (0, 4)

Decreasing: (-2, 0) Increasing: (0, 2) Positive: (0, 4) Negative: (-4, -1)

Which method is most likely to produce a random sample of 5 students from a school club?

selecting 5 club members from a hat containing the names of all members

selecting 5 club members who have brown hair

selecting the 5 club members who have raised the most funds for the club

selecting the 5 club members who arrive last to a club meeting

The police chief of a town is trying to determine the average speed of drivers on a specific road. • The police chief took a random sample of the speeds of 100 drivers on the road. • The mean was 48.5 miles per hour, with a standard deviation of 2.5 miles per hour. • The police chief wanted to decrease the margin of error of his next sample. Which choice would decrease the margin of error?

changing the time that the data is collected

changing the road on which the data is collected

The police chief of a town is trying to determine the average speed of drivers on a specific road. The police chief took a random sample of the speeds of 100 drivers on the road. The mean was 48.5 miles per hour, with a standard deviation of 2.5 miles per hour. The police chief wanted to decrease the margin of error of his next sample. Which choice would decrease the margin of error?

changing the time that the data is collected

changing the road on which the data is collected

What is the type of distribution, center, and spread of the data?

Skewed right; median: 5; IQR: 2

Normal; mean 5.6; Standard Deviation: 2.7

Which is an example of a quantitative variable?

The proportion of backpacks that weigh more than 50 pounds

Mike and Juanita want to learn more about students’ dietary intake. What is the best way to collect this information?

give students a journal to record everything they eat for a wee

give students a quiz on nutrition and meal planning

ask students what they ate for breakfast on Saturday

ask students to describe their favorite meal

Select the words that best complete the sentences. A business owner wants to know what additional services his customers would value most. To determine this, he creates a 1)___________ with several potential new services for participants to rank. In order to draw valid 2)____________ , the participants must be selected 3)_______________ so that they form a 4)_________________sample of his customers.

1) survey 2) conclusions 3) randomly 4) representative

1) consistently 2) representative 3) randomly 4) conclusions

1) list 2) opinions 3) survey 4) representative

1) survey 2) conclusions 3) representative 4) randomly

Select the options that best complete the sentences. When taking a survey, it is best if the number of participants is 1)_____________ . Randomizing the selection of participants helps to avoid 2)___________________ , and ensure that the sample is 3)________________________ of the population.

1) large 2) bias 3) representative

1) small 2) independent 3) conflicts

1) representative 2) small 3) independent

1) independent 2) conflicts 3) large

MATH 3 - REVIEW FOR NC TEST

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MATH 3 - REVIEW FOR NC TEST

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HSS.IC.B.4, HSS.IC.B.3, HSF.IF.A.2

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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The graph of an equation is shown below. Which equation represents the graph?

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MATH 3 - REVIEW FOR NC TEST

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The graph of an equation is shown below. Which equation represents the graph?

Martha can paint a room in 2 hours. Jamie can paint the same room in 6 hours. How long, to the nearest tenth of an hour, will it take them to paint the room together?

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