An organization examined the cell phone records and recorded the number of text messages sent on a particular day for 400 randomly selected males and 400 randomly selected females between the ages of 14 and 17. The dotplots below show distributions of the number of text messages sent that day. Which of the following is a valid statement?

The standard deviation is greater for the females' distribution because the values are not clustered as tightly as for the males' distribution.

The standard deviation is about the same for both distributions because they both have about the same range.

The standard deviation is greater for the females' distribution because the frequencies go up and down more often than in the males' distribution.

The standard deviation is greater for the males' distribution because of the outlier around 230 text messages per day.

The histogram below displays the distribution of battery life in hours. What would happen to the data distribution if a battery with a life of 40 hours were included?

The data distribution would have a lower mean and a larger spread.

The data distribution would have a lower median and smaller spread.

The data distribution would have a higher median and smaller spread.

The data distribution would have a higher mean and larger spread.

Which situation can be represented with a linear function where the volume of water in a tub is a function of time?

A faucet pumps water into a tub at a rate of 2 gallons per minute.

A tub loses one-fifth of the remaining water each minute as it is drained.

A tub is filled at a rate of 2 gallons per minute and then drained at a rate of 3 gallons per minute.

A faucet pumps water into a tub at a rate of 3 gallons per minute as 5% of its volume is drained per minute.

Given the functions $$f(x) = 3^x - 1$$ and $$g(x) = x^2 - 2x + 8$$ , which of the following is a true statement?

The function $$f(x)$$ exceeds $$g(x)$$ when $$x>2$$ .

Both functions are increasing when $$x

The difference between the y intercepts is $$6$$ .

Both functions are negative when $$x

The function $$V(t)=30,000-2,900t$$ models the value of a car t years after it was purchased. What is the meaning of the coefficient of $$t$$ ?

the amount the value of the car decreases each year after it is purchased

the value of the car when it was purchased

the total change in the value of the car t years after it was purchased

the amount the value of the car increases each year after it is purchased

The table below shows the price of pizza based on the number of toppings on the pizza at 5 different pizza places. Which best describes the slope of the linear best-fit equation for the data?

The average increase in price for each additional topping is $2.20.

The average increase in price for each additional topping is $1.50.

The average price of a pizza with no toppings is $9.66.

The average price of a pizza with no toppings is $7.46.

A study shows that there is a negative correlation between a student's anxiety before a test and the student's score on the test. Which statement can be concluded?

There is a correlation but not necessarily a causation between the student's anxiety and the student's test score.

Higher anxiety causes lower test scores.

Lower anxiety causes lower test scores.

There is no correlation between a student's anxiety and the student's test score.

The Smith family wants to rent a house at the beach. The cost of each house varies by the number of bedrooms it has. The chart shows the price of several of the houses they are considering renting. Using the correlation coefficient, what conclusion can be made about the linear relationship of the data?

Since the correlation coefficient is 0.92, it shows that there is a strong linear relationship between cost and the number of bedrooms.

Since the correlation coefficient is 0.92, it shows that having more bedrooms causes the price to go up.

Since the correlation coefficient is 0.84, it shows that having more bedrooms causes the price to go up.

Since the correlation coefficient is 0.84, it shows that there is a strong linear relationship between cost and the number of bedrooms.

Which situation can be modeled using an exponential function?

The money in a bank account grows by 1% per year.

A tree grows 15 centimeters per year.

A bacteria population decreases by 100 bacteria every hour.

The rate a taxi driver charges is a fixed fee plus $0.30 per mile.

The equation $$y=250(1.05)^x$$ models the value of an investment after x years. Which statement is true about the value of the investment?

The value of the investment is growing by 5% each year.

The value of the investment is growing by $250 each year.

The value of the investment is decreasing by $250 each year.

The value of the investment is decreasing by 5% each year.

Math 1 Practice EOC (Calc Active)

Authored by Louwenna Manalo

Mathematics

9th Grade

CCSS covered

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Tags

CCSS.HSA.CED.A.4

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The vertices of a rectangle are located at (2, 5), (4, 3), (-2, -3) and (-4, -1). What is the approximate perimeter of the rectangle?

26.5 units

23.7 units

22.6 units

15.2 units

Tags

CCSS.HSG.GPE.B.7

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Tags

CCSS.HSA.APR.A.1

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

0.47%

0.53%

47%

53%

Tags

CCSS.HSF-IF.C.8B

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The scatterplot below shows the amount of sales in dollars as it relates to the daily temperature. Which of the following best describes the relationship between the two variables?

The scatterplot has a linear shape and displays a strong positive relationship. This means that as the temperature increases the sales increase.

The scatterplot has a curved shape and displays a weak positive relationship. This means that as the temperature increases the sales increase.

The scatterplot has a linear shape and displays a strong negative relationship. This means that as the temperature increases the sales decrease.

The scatterplot has no noticeable shape and displays a weak positive relationship. This means that as the temperature increases the sales increase.

Tags

CCSS.HSS.ID.B.5

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

-2

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Tags

CCSS.HSF.BF.A.2

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Math 1 Practice EOC (Calc Active)

The vertices of a rectangle are located at (2, 5), (4, 3), (-2, -3) and (-4, -1). What is the approximate perimeter of the rectangle?

The scatterplot below shows the amount of sales in dollars as it relates to the daily temperature. Which of the following best describes the relationship between the two variables?

John took 600 mg of a medicine. Each hour, the amount of medicine in his body decreases by about 25%. Which function represents the amount of medicine in John’s body after x hours?

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