Exponential Functions Review STAAR

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The graph of an exponential function is shown on the grid. Based on the graph, which statement about the function is true?

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

• The domain is the set of all real numbers greater than 2.

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

• The domain is the set of all real numbers less than 2.

What is the range of the exponential function graphed on the grid?

• {y | -∞ < y < ∞}

• {x | x > -5}

• {y | y > 0}

• {x | -∞ < x < ∞}

Function f is graphed below. What is the domain of f?

• {x | x < 3}

• {x | -∞ < x < ∞}

• {y | y > 0}

• {y | -∞ < y < ∞}

Which graph shows an exponential function with a range of all real numbers greater than 0?

• Option F

• Option H

• Option G

• Option J

The table contains some points on the graph of an exponential function. Based on the table, which function represents the same relationship?

• r(x) = 0.0875(2)^x

• r(x) = 2(0.0875)^x

• r(x) = 0.175(2)^x

• r(x) = 0.0875(1.75)^x

Determine the domain and range of exponential functions of the form f(x) = ab^x and represent the domain and range using inequalities.

Which situation could describe this function?

• The value of a house decreases by approximately 4 1/4% per year.

• The value of a house decreases by $11,263 per year.

• The value of a house increases by approximately 4 1/4% per year.

• The value of a house increases by $11,263 per year.