In the month of October, the population of a species of fish in a river increased by a factor of 1.05 every day. The function below shows the number of fish in the river f(x) after x days.

f(x) = 100(1.05)x

Which of the following is a reasonable domain for the function?

a.0 ≤ x ≤ 100

b.0 ≤ x ≤ 31

c. All positive integers greater than 100

d.All positive integers less than 100

2.)The sales totals at Linda's food store have increased exponentially over the months. Which of these best shows the sales in the first three months?

a. $1200 in the first month, $1260 in the second month, and $1323 in the third month

b. $1200 in the first month, $1250 in the second month, $1300 in the third month

c.$1200 in the first month, $1272 in the second month, $1344 in the third month

d. $1200 in the first month, $1285 in the second month, $1370 in the third month

3.)The same amount of trash is dumped into a landfill every day. The function below shows the total number of tons of trash n in the landfill after x days.

n = 2000x + 1000

What does the number 2000 represent?

a.Amount of trash originally in the landfill

b. Amount of trash added to the landfill every day

c. Rate at which the total trash increases every day

d.Rate at which the total trash is recycled every day

4.)The average annual salary of the employees of a company in the year 2005 was $80 thousand. It increased by the same factor each year and in 2006, the average annual salary was $88 thousand. Let f(x) represent the average annual salary, in thousand dollars, after x years since 2005. Which of the following best represents the relationship between x and f(x)?

a. f(x) = 88(0.88)x

b. f(x) = 88(1.1)x

c.f(x) = 80(0.88)x

d.f(x) = 80(1.1)x

5.)
Jack invested some money in a bank at a fixed rate of interest compounded annually. The equation below shows the value of his investment after x years.

f(x) = 300(1.02)x

What was the average rate of change of the value of Jack's investment from the third year to the fifth year?

6.43 dollars per year

8.24 dollars per year

12.86 dollars per year

14.26 dollars per year

Question

In the month of October, the population of a species of fish in a river increased by a factor of 1.05 every day. The function below shows the number of fish in the river f(x) after x days.

f(x) = 100(1.05)x

Which of the following is a reasonable domain for the function?

a.0 ≤ x ≤ 100

b.0 ≤ x ≤ 31

c. All positive integers greater than 100

d.All positive integers less than 100

2.)The sales totals at Linda's food store have increased exponentially over the months. Which of these best shows the sales in the first three months?

a. $1200 in the first month, $1260 in the second month, and $1323 in the third month

b. $1200 in the first month, $1250 in the second month, $1300 in the third month

c.$1200 in the first month, $1272 in the second month, $1344 in the third month

d. $1200 in the first month, $1285 in the second month, $1370 in the third month

3.)The same amount of trash is dumped into a landfill every day. The function below shows the total number of tons of trash n in the landfill after x days.

n = 2000x + 1000

What does the number 2000 represent?

a.Amount of trash originally in the landfill

b. Amount of trash added to the landfill every day

c. Rate at which the total trash increases every day

d.Rate at which the total trash is recycled every day

4.)The average annual salary of the employees of a company in the year 2005 was $80 thousand. It increased by the same factor each year and in 2006, the average annual salary was $88 thousand. Let f(x) represent the average annual salary, in thousand dollars, after x years since 2005. Which of the following best represents the relationship between x and f(x)?

a. f(x) = 88(0.88)x

b. f(x) = 88(1.1)x

c.f(x) = 80(0.88)x

d.f(x) = 80(1.1)x

5.)
Jack invested some money in a bank at a fixed rate of interest compounded annually. The equation below shows the value of his investment after x years.

f(x) = 300(1.02)x

What was the average rate of change of the value of Jack's investment from the third year to the fifth year?

6.43 dollars per year

8.24 dollars per year

12.86 dollars per year

14.26 dollars per year

stormswan · Answer

the first one is B.

anonymous · Answer

did u ever get the answer to number 5

anonymous · Answer

did you get the answer to 5? @ETill3

stormswan · Answer

#5 is $12.86 per year. @ETill3 @jadee27p