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WorksheetsAlgebra 1 Exponential Functions Quiz
Total questions: 10
Worksheet time: 5mins
y=3x is an exponential growth function
True
False
y=4x is a(n)
linear function
exponential function
quadratic function
The y-intercept of y=2(3x) is 2.
true
false
Which situation could be modeled by using a linear function?
A bank account balance that grows at a rate of 5% per year, compounded annually
A population of bacteria that doubles every 4.5 hours.
The cost of cell phone service that charges a base amount plus 20 cents per minute.
The concentration of medicine in a person’s body that decays by a factor of one-third every hour.
The table shows the average yearly balance in a savings account where interest is compounded annually. No money is deposited or withdrawn after the initial amount is deposited. Which type of function best models the given data?
linear function with a negative rate of change
linear function with a positive rate of change
exponential decay function
exponential growth function
Which of the three situations given below is best modeled by an exponential function?
I. A bacteria culture doubles in size every day.
II. A plant grows by 1 inch every 4 days.
III. The population of a town declines by 5% every 3 years.
The graph of the equation y = 2x intersects
1) the x-axis, only
2) the y-axis, only
3) the x-axis and the y-axis
4) neither the x-axis nor the y-axis
The graph of the function f(x) = 3x lies in which quadrant(s)?
I
II
III
IV
The equation A = 1300(1.02)7 is being used to calculate the amount of money in a savings account. What does 1.02 represent in this equation?
0.02% decay
0.02% growth
2% decay
2% growth
Milton has his money invested in a stock portfolio.The value, v(x), of his portfolio can be modeled with the function v(x) = 30,000(0.78)x, where x is the number of years since he made his investment.Which statement describes the rate of change of the value of his portfolio?
1) It decreases 78% per year.
2) It decreases 22% per year.
3) It increases 78% per year.
4) It increases 22% per year.
