Question 1. The local gym currently has 100 members.
The membership enrollment is increasing at a
rate of 8% per year. To the nearest whole number, how many members will the local gym have in 5
years?
A. 145. B. 146. C. 147. D. 148.
Question 2. The hawksbill turtle population is currently 25,000 and decreasing at a rate of 12% each
year. How many hawksbill turtles will there be in 15 years?
A. 136839. B. 375000. C. 3674. D. 10000.
Question 3. Maria made an initial investment in a savings account that paid 1.5% interest
compounded annually. If after 4 years she had $6,250 in her savings account, how much was the
initial investment? Round to the nearest dollar.
Lời giải
Đáp án: 5889
Question 4. A cable company with a reputation for poor customer service is losing subscribers at a
rate of approximately 3% per year. The company had 2 million subscribers at the start of 2014.
Assume that the company continues to lose subscribers at the same rate, and that there are no new
subscribers. Which of the following functions, models the number of subscribers (in millions)
remaining years after the start of 2014?
A. B. C. D.
Question 5. On June 1, there were 100 views of a video posted on a social media site. Every 2 days
after January 1, the number of views of the video had increased by 60% of the number of views 2
days earlier. The function gives the predicted number of views days after June 1. Which
equation defines
A. B.
C. D.
Question 6.
The function gives the value, in dollars, of a certain piece of equipment after months of use. If
the value of the equipment decreases each year by of its value the preceding year, what is the
value of
A. B. C. D.
Question 7. If the initial population of rats was 20 and grew to 25 after the first year, which of the
following functions best models the population of rats with respect to the number of years if the
population growth of rats is considered to be exponential?
A. B. C. D.
Question 8. A scientist counts 80 cells in a petri dish and finds that each one splits into two new cells
every hour. He uses the function to calculate the total number of cells in the petri dish
after hours. Which of the following assigns the correct values to and ?
A. B. C. D.
Question 9. The population of trees in a forest has been decreasing by 6 percent every 4 years. The
population at the beginning of 2015 was estimated to be 14,000. If represents the population of
trees years after 2015, which of the following equations gives the population of trees over time?
A. B. C. D.
Question 10. Chris plans to purchase a car that loses its value at a rate of 14% per year. If the intial
cost of the car is $27,000, which of the following equations should Chris use to determine the value,
of the car after 4 years?
A. B. C. D.
