Quizziz Activity Day 1

1.The number of stores opened by a coffee company can be modeled by the exponential function graphed on the grid, where x is the number of years since 1992.

Based on the graph, which statement does not appear to be true?

• The coffee company had opened 400 stores by the end of 1992

• The coffee company opened 100 stores in one year

• Every year the number of stores the coffee company opened increased by 25%

• Since 1992 the coffee company has opened 250 stores each year

2.The table contains some points on the graph of an exponential function.

Based on the table, which function represents the same relationship?

• q(x) = (0.25)^x

• q(x) = 256(0.25)^x

• q(x) = 0.0625(4)^x

• q(x) = 0.5(4)^x

3.The graph of an exponential function is shown.

Based on the graph, which statement about the function is true?

• A. The range is the set of all real numbers less than 0

• B. The domain is the set of all real numbers greater than -4

• C. The range is the set of all real numbers greater than 0

• D. The domain is the set of all real numbers less than -4

4.A toy is made up cylindrical rings stacked on a base, as shown in the diagram. The diameter of Ring 1 is 87% of the diameter of the base. For Ring 2 through Ring 7, the diameter of each ring is 87% of the diameter of the ring directly below it.

The diameter of the base is 5 inches. Which functino can be used to find the diameter in inches of Ring r,

where 1≤ r ≤7

• d(r) = 5(0.87)^r

• d(r) = 0.87(r-5)

• d(r) = 0.87(5)^r

• d(r) = 5(r-0.87)

The exponential function modeled below represents the number of square kilometers of land occupied by cane toads x years after this animal was first introduced into Australia.

Based on the data, which measurement is closest to the number of square kilometers of land that will be occupied by cane toads 40 years after this animal was first introduced into Australia?

• A. 550,000 km²

• B. 1,250,000 km²

• C. 600,000 km²

• D. 800,000 km²

6.The starting annual salary for an office worker at a company is $29,000. If a company awards an annual increase of 6.2%, which graph models this situation after the office workers receives x annual increased?

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7.A table of values for the exponential function f is shown.

Which situation could describe the function?

• The value of a house increases by approximately 11/4 % per year

• The value of a house increases by $3,850 per year.

• The value of a house decreases by approximately 11/4% per year.

• The value of a house decreases by $3,850 per year

8.The graph below shows the change in the value of a car over several years.

Based on the information in the graph, which conclusion appears to be true?

• F. The car lost about one-half of its value every 3 years.

• G. The car lost about one-quarter of its value every year.

• H. The car lost less of its value between years 9 and 10 than between years 1 and 2

• J. The car lost more of its value between years 9 and 10 than between years 1 and 2.

9.A population of 1500 deer decreases by 1.5% per year. At the end of 10 years, there will be approximately 1290 deer in the population.

Which function can be used to determine the number of deer, y, in this population at the end of t years?

• y = 1500(1 - 0.015)^t

• y = 1500(0.015)^t

• y = 1500(1 + 0.015)^t

• y = 1500(1.5)^t

10.There are 1,024 players in a tennis tournament. In each round, half the players are eliminated. Which function can be used to find the number of players remaining in the tournament at the end of x rounds?

• A. f(x) = 1,024(1.50)^x

• B. f(x) = 1,024(0.50)^x

• C. f(x) = 1,024(1.05)^x

• D. f(x) = 1,024(0.05)^x